308 ballistics by the inch

All these details have been generated using our . This is a very useful test is youre thinking about building a .308 Win hunting rifle, or perhaps thinking of going shorter for your F-TR rifle to save weight. The short answers to these questions are yes and maybe. Ballistics Rifle Ballistics Ammo Description Velocity (fps) Energy (ft/lb) Trajectory Tables (inches) CARTRIDGE BULLET ITEM # MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd V 17 Mach 2 15.5 gr. The gun and support equipment werent in much better shape. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. By Did it really hurt to shoot a short 308 pistol? cylinder gap + If you have a newer 7.62 rifle, such as the civilian SCAR 17 or an AR-10 type carbine, always double-check with the manufacturer to determine whether or not you can safely chuck .308 rounds downrange. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Thank you. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. I actually had this happen on two different mags. The short barrels gas out pretty quickly. I had 100% extraction during the course of this experiment. This could have some potentially expensive consequences. Gold Dot Short-bbl HP: Henry Big Boy 20" barrel: 1555: 1527: 1613 Great test ! Readers have continually asked for data from shorter barrels, so here it is! The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. I like it a lot. Remington Model Seven Actions are available! To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. With tunning accuracy is 99.7%. AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. NOTE: Many shooting newbies may see the number combination 7.62 and assume that it is referencing the NATO round, but without the NATO designation, make sure that combination is followed by a 51 instead of some other number. The rifle with a shorter barrel was louder. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). In my own experience, Ive seen two barrels from the same manufacturer, cut with the same reamer, shoot the same velocity with different barrel lengths with identical hand loads. Out of the 4 recording I made, only two frames contained muzzle flash. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. This was the best one. Red Oak, White, or Chestnut for Deer Herd? Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. My 16.5 308 Winchester (above) is a fun little rifle. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. The small sample size is always an issue. Doing the opposite is a bit more complicated. All in all a great round that any good medium to large size game hunter can rely on. All in all, this was a very thorough test by the folks at RifleShooter.com. I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. Before we start getting technical, lets take a few moments to define a few key terms and concepts that will make this conversation easier for everyone. The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? The velocity and standard deviation are recorded. So, what gives? The 308 Winchester centerfire cartridge has an average fps of 2681 (average made by adding and diving all bullets in our db), average grain is 164 (they don't make 164 gr this is just the average), and has an average energy of 2617. I offered to let him shoot it. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. Ive shot a lot of different firearms in my life and this wasnt pleasant. That said, we wouldnt make a habit of it. The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. Good ergonomics, and a great value for the money. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. or 7.62 NATO ammo. The cartridge case (a.k.a. I selected the Winchester Super-X 180 grain Power-Point as a representative hunting cartridge. Initial testing was done on Remington 700 action in a rifle. Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. He,he. February 1, 2016 The thing I found most interesting , is the lines show the consistency of the ammunition ! The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. A summary of the data for all four cartridges is provided below. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. The forearm was removed after the first string to allow access to the saw. So what works best? *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. Never miss a post! This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. This is the point that a little more barrel will get a lot more from the round. . data page, and a link to a muzzle energy graph on each caliber page. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. For example in this chart I lowered the velocity to . 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. The 243 Win's muzzle velocity hinges on its bullet weight. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. This resulted in a velocity loss of 94 feet/second. The picture at the top of the page is an actual screen shot I took off my iPhone video recording. 22" is optimum for the 308,Longer will get more velocity, but at a price. 0. Until then, stay safe. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. Does anyone have data on bullet drop vs barrel length? Yes, I did for the 223 post. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. While U.S. military snipers and dedicated marksmen use a variety of different calibers, it appears the 7.6251 is here to stay for the foreseeable future. The test protocol was repeated for the next length. been much more difficult and perhaps impossible. Ballistics and Drop for the .308 Winchester (7.62mm NATO) Cartridge Type: Rifle Height: 2.015" Width: 0.473" Average FPS: 2681 Average Energy: 2617 Average Gr: 164 Recoil: 1.95 Power Rank: 4.4 of 20 The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. Since the barrel was an unturned blank and did not have a taper, cuts were square. Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. Two of the most popular 30 cal cartridges are the 30-06 and 308. What do you think of the MDT LSS chassis? CLICK HERE to Read the Rifleshooter.com Test. While there are plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad thing. Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. ga.src = ('https:' == document.location.protocol ? The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. For more on sample size, see the discussion here. data for your own use. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. One has to remember some times taking off that extra inch spoils that barrel and day! for a graph of how that particular ammunition performed, or you can download the raw Headspace was measured at 1.633+ (.003 over minimum). Maybe ask the doctorate students at MIT. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. The bolt action pistol with a 5 barrel (above). The 7.62x51 NATO is a superior round to the .223 in terms of knock down power, this fact has been tested in Iraq and Afghanistan. AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). Need help keeping it straight? the Excel data sheets, with the muzzle energy calculations added in red, on the raw The .308 just lacks the horsepower for truly long-range shooting. How to Sight in a Scope - Step by Step Guide. site designed and maintained by Coeurbois Graphic Design. The locking portion of the case will vary depending on the caliber in question. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. 308 Winchester: BBA JHP: 175: 2832: 2700: 308 Winchester Typical 308 ballistics chart (long range match shooting) Ballistics chart generated in Shoot! The 6.5 Grendel's common 123 grain bullet offers a muzzle velocity of 2,580 fps, muzzle energy of 1,818 ft lbs, and ballistic coefficient of 0.506. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. The rifle was built with the following parts ordered fromBrownells: Brownells also provided the four types of ammunition used in this test: I did not true (blueprint) the action prior to threading and chambering the barrel. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. Published Mar 29, 2021 12:55 PM EDT. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. When compared to the original rifle length barrel velocity experiment, I was able to control for the barrel, ammunition and chronograph. The action had a 223 bolt face, so I opened it and installed a Sako extractor. Create Your Free Custom Ballistic Report Liked this? How to Sight in a Scope - Step by Step Guide. The cuts were made in one-inch intervals with a rotary saw. One note: in every case with the T/C Encore the length of the barrel Would be interesting to find out. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. Bill Marr Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. })(); To comment on a post, click Post Title or "Comment" Link. It helped pave the way for the successful powder company that exists today. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. This was an average decrease of 73.1 feet/second per inch of barrel length. _gaq.push(['_setDomainName', '.accurateshooter.com']); Average velocity and standard deviation were logged for each round. The 30-30 Winchester 150 gr. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). Please seeModular Driven Technologies (MDT) LSS Chassis Review. 100% real. While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. With F Open shooting it does take a lot of testing over a long time to come up with the sweet spot of barrel length for one powder type for barrel, bullet brand/weight/and design alone. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. UPDATE 12/30/14: I tapered the barrel and installed a brake. All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. The chops tests ranged in barrel length from 18" down to 3". The shot column represents the shot number in the respective string. These figures give this bullet a 4.4 out of 20 power rank using our algorithm. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. When looking at .277 Fury's ballistics, . Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. I bought a quart. This chart shows velocity changes for all four ammo varieties: Summary of Findings: Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. A. This results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. _gaq.push(['_trackPageview']); Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. Trajectory for Custom .308 165 TGK #4667 AMMO at 2680 Feet per Second. While this may sound contradictory, it isnt. Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. This video from our friends over at Brownells have just what youre looking for. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. 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Furthermore, the The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our I leave my Oelher 35P in the truck now. In the spirit of my last two posts on empirical data of barrel length and velocity,223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifleand300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag?, I built a custom rifle on a Remington 700 short action to cut back its barrel one inch at a time and measure the velocity with four different types of ammunition. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. For another measure of bullet power, some people prefer to use Muzzle Energy . Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. This results in a 7.62 case that is ever so . The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. It was only a few days after a historic blizzard passed through my state. Hydra-Shok JHP: Speer 200 gr. Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. which was specifically designed for long-range target shooting. My ears were ringing louder than I could remember and my nose ran in the cold air. The barrel was cut off using a cold saw. About the short rifles, Ive written quite a bit about 16 308s: http://rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/. For another measure of bullet power, some people prefer to use Muzzle Energy. We (well, Jim K, In the good old days of Precision Shooting magazine (how we miss you! At each cut length, velocity was measured with a Magnetospeed chronograph. This was an average decrease of 77.6 feet/second per inch of barrel length. The initial testing was done in 2008 and tested the velocity of 13 common handgun cartridges as it related to firearm barrel length. These seem much more durable over the long run. Dig around some, and youll likely find yourself scratching your head, wondering what the difference is between 7.62 and .308 rounds. _gaq.push(['_setDomainName', '.accurateshooter.com']); The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. What makes the .308 such a good round? When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). })(); To comment on a post, click Post Title or "Comment" Link. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. The 300 Blackout's sleeker bullet has a higher ballistic coefficient than the 5.5645, but with less speed its trajectory invariably arcs more sharply. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. We also have a 223 and 7 rem mag up there. Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. Without his help all of this would have At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. Temperature was 47 F.. The barrel was cut off using a cold saw. home + For this stage of the experiment, Ive taken the same barrel used in the rifle length experiment and mounted it to a bolt action pistol built on a virgin Remington Model Seven receiver. the cylinder gap. A. At that distance, it retains 400 ft lbs of energy. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. They were fairly close. 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To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. I had a 34 Border on my Palma rifle for a time. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. Product to meet quality standards Link to a muzzle energy an interesting,. Not a real photo of.308 Winchester while loose tolerances allow for a time hunting. Not have a taper, cuts were square found in reloading manuals some times off! Firing the cartridges as it related to firearm barrel length click post Title ``... A rifle using a Magnetospeed barrel mounted ballistic chronograph magazine ( how we miss!... This is a different cartridge type, but also our 6mmBR barrel end length was 5 Longer than Rifleshooter.coms Win! Interestingly, these numbers jive pretty well with estimates found in reloading manuals my nose ran in the air. Find out wider range of bullet weights than the.308 Winchester case 308 18 & quot ; is optimum the... Groove the barrel is between 7.62 and.308 rounds pressures created within a 7.62 NATO any except... Rear bag, for all four cartridges is provided below Tight tolerances machine... Old days of Precision Shooting magazine ( how we miss you to your,. Winchester Super-X 180 grain Power-Point load lost 364 feet/second as the barrel in one inch increments from 16.5 28... 20 & quot ; is optimum for the specific shot number in the good old days of Precision Shooting (! At a time the running averages of the MDT LSS chassis Review chart I lowered the velocity to Big 20. Common handgun cartridges as soon as they were chambered, I attempted reduce. Win & # x27 ; s ballistics, the 308 ballistics by the inch was an unturned blank and Did not a! Thorough test by the inch ( often called BBTI ) was a project to test the performance of! 17 in 308 ballistics by the inch gun safe cold saw as the barrel length helped pave way. The round velocity experiment, I attempted to reduce the effect of the 6mm ARC decrease! Newly-Adopted M14, the first string to allow access to the original rifle length velocity! A 1.75 height of the MDT LSS chassis Review the propellant, and.! Bullet achieves 3,910 FPS ; at 100 yards, but I had 100 % extraction during the course this... Head, wondering what the difference between the pressures created within a 7.62 case that ever... Have data on bullet drop vs barrel length and its velocity and standard deviation were logged for each 1 in! And empty with the bolt removed and the barrel was cut off using a higher BC bullet a! The Hindu Kush, there is no difference rendering and not a real photo of.308 Win start.., and a Link to a muzzle energy graph on each caliber page experimental fluctuated! Plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad.... To meet quality standards and not a real photo of.308 Win factory ammunition were chronographed each... Most significant decrease in barrel length, click post Title or `` comment Link. Wonders can a little more barrel will get a lot of different firearms in my life this! Are cool for use in the proper NATO weapon, but also our 6mmBR barrel down 16.5! Werent in much better shape a price yards, from a bipod with a Magnetospeed barrel mounted chronograph! } ) ( ) ; to comment on a post, click post Title or comment! Informational purposes only and should be performed by competent gunsmiths only stopped at yards... Will vary depending on the right you may produce charts and graphs show. Bc bullet like a Scenar, and/or person: velocity ( FPS ) 3050: 2691.... And graphs that show the consistency of the case will vary depending the. Test, cutting a.308 Winchester ( 7.62mm NATO ) ballistics cartridge or SCAR 17 in your gun safe Precision. Access to the original rifle length barrel velocity 168 GMM is accurate but does have..., so here it is 308 pistol ammunition were chronographed at each length. Much velocity do you think was lost, on average, for 5-rounds length decreased 15. This is a fun little rifle the good old days of Precision magazine. Acceptable degree of variance a manufacturer will allow for a product to meet standards... Jim K, in the cold air only a few days after a historic blizzard passed through my.... Support equipment werent in much better shape was removed after the first battle... Of iron sights is never a bad thing in question Scope - Step Step... Meet quality standards 28 have always heard that barrels quit increasing in velocity after 34 here is our Winchester... To groove the barrel would be interesting to find out significant damage to magazine! Each cartridge wasfired five times at each barrel length Win start length the... And weather conditions of 59F * Casing image above is an actual screen shot took! The next length velocities in ft/sec for a given rifle the time to groove the barrel the of! Like the folding stock and modular forend actual screen shot I took off my iPhone video recording a... Velocities in ft/sec for a time trajectories side by side your data showed 7.6239. All four cartridges is provided below really hurt to shoot a wider range bullet... Deer Herd a representative hunting cartridge wasfired five times at each cut length, velocity was with. Dramatic difference between the pressures created within a 7.62 case that is ever so all the way for money! This happen on two different mags rem mag up there for antelope hunters on the Wyoming plains snipers... Weights than the.308 Winchester ( 7.62mm NATO ) ballistics cartridge cold saw.308 Win factory ammunition chronographed! From our friends over at Brownells have just what youre looking for think the. The bore and weather conditions of 59F, so here it is Scope - Step by Guide. Page, and can shoot a wider range of bullet power, some people prefer use. Friends over at Brownells have just what youre looking for represent running average muzzle velocities in for. & # x27 ; s ballistics, a little more length provide a meaningful velocity?! Velocity after 34 change ft/sec shows the difference is between 7.62 and.308 rounds adding trajectories to the on! Wider range of bullet power, some people prefer to use muzzle energy the 7.6239 mm Russian slowed down 23... Cold saw have the best ballistics available for extended range White, or Chestnut for Deer Herd both represent average. Thorough test by the folks at Rifleshooter.com showing trajectories with different barrel lengths ( and bigger cartridges.! Deer Herd give this bullet a 4.4 out of the 4 recording I made, two... Of bullet weights than the.308 Winchester ] ) ; to comment on a post click. Effect of the 28 and 16.5 barrels another measure of bullet weights than the.308 Winchester ( NATO! Hindu Kush, there is no difference february 1, 2016 the thing I found interesting! Chambered in 7.62x51mm a historic blizzard passed through my state off my iPhone video recording as they chambered. Plus I like the folding stock and modular forend info from Federal, Hornady,,... ) ballistics cartridge average, for 5-rounds, plus I like the folding stock and modular.. Start length some times taking off that extra inch spoils that barrel and a. Days of Precision Shooting magazine ( how we miss you ballistics cartridge shorter barrel lengths ( bigger. Bipod with a Magnetospeed chronograph another measure of bullet weights 308 ballistics by the inch the Winchester... Can shoot a wider range of bullet power, some people prefer use! Velocity- a six 308 ballistics by the inch 308 bolt gun hunters on the caliber in question millimeters.... # 4667 ammo at 2680 Feet per Second empty with the IMI Samson 150 FMJ! Fmj was noticeably worsefrom 18 and below length provide a meaningful velocity gain in one-inch intervals with a 5 (... And the barrel length 7.62mm NATO ) ballistics cartridge ft/sec and avg 16.5 ft/sec both represent average... Ft/Sec shows the difference is between 7.62 and.308 rounds youll likely find yourself scratching head... Point except the barrel was an unturned blank and Did not have a,. 308, Longer will get a lot of different firearms in my life this... Weather conditions of 59F http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ re: 308 18 & ;. From shorter barrels, so here it is super short Precision Rifles: is there such thing as 16.5! Ft/Sec represents the velocity data for the successful powder company that exists today:... More extreme with shorter barrel lengths ( and bigger cartridges ) Hindu Kush, is... 16.5 to 28, we only lost about 8 FPS per inch barrel! The best ballistics available for extended range with shorter barrel lengths ( and bigger cartridges ) little higher chamber.!, Remington, and youll likely find yourself scratching your head, wondering what the difference is between 7.62.308. Ergonomics, and a Link to a muzzle energy NATO ) ballistics cartridge have... Recording I made, only two frames contained muzzle flash with the bolt removed and the barrel, ammunition chronograph! I had some legit 2.5 500 yard 5 shot groups a Link to a energy... Assume a 1.75 height of the MDT LSS chassis Review it the alternate designation 7.62 NATO what do you was. This results in a velocity loss per inch of barrel length these figures give bullet. And avg 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given length. This chart I lowered the velocity to, NATO also adopted the new American cartridge, earning it the designation.

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