Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. Ive shot a lot of different firearms in my life and this wasnt pleasant. By Readers have continually asked for data from shorter barrels, so here it is! 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. When that happens Ill post a link there. calibers/cartridges + Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Thanks for the kinds words about the 308 and 300 Win barrel length posts. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. 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). var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. Time. Average velocity and standard deviation was logged for each round. In308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), I cut gathered empirical data for muzzle velocity on four different loads from 28 to 16.5. Would be interesting to find out. 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. Nearly every target shooter had his teeth cut on a 308 Winchester. I post it here, for free, so other shooters can learn from it. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! UPDATE 12/30/14: I tapered the barrel and installed a brake. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. Need help keeping it straight? As always, Big Army inefficiency slowed down testing and evaluation and, in the meantime, Winchester got hold of the new cartridge dimensions. .277 Fury has a -41 inch drop at 500 yards . We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. 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. Hydra-Shok JHP: Speer 200 gr. The rifle with a shorter barrel was louder. The first number is the value of this cartridge, and the last number is the value of the most powerful round in our bullet database. Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. I bought a quart. A. I like them- in some ways you dont lose a lot. With tunning accuracy is 99.7%. The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. No, and yes. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. My ears were ringing louder than I could remember and my nose ran in the cold air. ammunition and other supplies, he was the brilliant gunsmith who worked with us to make 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. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. The bolt action pistol with a 5 barrel (above). 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; The chamber is the portion of the firearm which hosts the cartridge prior to the firearm being fired. At that distance, it retains 400 ft lbs of energy. My 22 308 Winchester (above) is my favorite rifle to shoot. Compare the above rates of loss to those found in308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel and the Winchester 180 grain Power-Point 22.5 feet/second per inch of barrel. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. However, testing indicates it may not be as much as initially thought. 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/. 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. These seem much more durable over the long run. The brand new, factory AI AICS magazine also flew apart as few times. Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. The PowerRank is an estimation of the cartridge power. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. DPX: Federal 240 gr. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. Ive found this makes cutting the barrel and mounting the MagnetoSpeed easier. 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. 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). For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. This means throwing .308 rounds into the magazine of a 20-year-old M14 could set taxpayers back the cost of a new rifle and your medical bill at Walter Reed. We may earn revenue from the products available on this page and participate in affiliate programs. Or are they different? Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. We did all the work. I use a Forster Match Rife Headspace Gauge Kit. All these details have been generated using our . 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. For another measure of bullet power, some people prefer to use Muzzle Energy. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. Troubleshooting seized ejectors. Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. 22" is optimum for the 308,Longer will get more velocity, but at a price. Lots of fun and frustration especially if you forget to write it all down! 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 cuts were made in one-inch intervals with a rotary saw. The barrel was cut off using a cold saw. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. Average velocity and standard deviation were logged for each round. I shook vigorously from head to toe. Selecting the best barrel length for the .300 BLK can be a double-edged sword. If you liked this postsubscribe to this blog (top right corner of page). The test protocol was repeated for the next length. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. This was an average decrease of 60.7 feet/second per inch of barrel length. Yes, I did for the 223 post. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. My calculations assume a 1.75 sight over bore height. Trajectory for Custom .308 165 TGK #4667 AMMO at 2680 Feet per Second. Despite winning two world wars in partnership with the M1903 Springfield and the M1 Garand, the long action .30-06 Springfield fell out of favor with the U.S. Army following World War II. Here is a list of all 23 different data sets we have tested. We also have a 223 and 7 rem mag up there. Brian Smyth Starting out at 2840fps muzzle velocity ( over 100fps faster than the standard A-MAX load from Hornady) this bullet is sighted-in to zero at 240 yards and is 39.16 low at 500 yards. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. Temperature was 47 F.. The gun and support equipment werent in much better shape. Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. the Excel data sheets, with the muzzle energy calculations added in red, on the raw Click on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw data for your own use. .357 SIG, .38 Super Auto Colt, .35 Whelen, .300 Remington Ultra Magnum, .35 Remington, .44 Smith & Wesson Special, .380 Auto (9mm Browning Short), 10mm Auto, .25 Winchester Super Short Magnum (WSSM), .303 British, 6.5x54 MS (6.5 Mannlicher-Schoenauer), .300 Remington Short Action Ultra Magnum, .218 Bee, 6.8mm Remington SPC, .25-20 Winchester. Bill Marr All in all a great round that any good medium to large size game hunter can rely on. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. For more on sample size, see the discussion here. There are plenty of options from which to choose. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. The short answers to these questions are yes and maybe. this insane project much more practical. Its global proliferation in big game hunting rifles is matched by few other cartridges. 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. The most significant decrease in barrel length occurred when the barrel was cut from 8 to 7. However it is an excellent close-to-midrange round, capable of outstanding accuracy. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. 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. 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. 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. Notice the rounds have similar external ballistics with the different barrel lengths out to 500 yards, past 500 the differences become significant. Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. 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. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. First, lets talk about pressure. 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. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. 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 . Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. The chops tests ranged in barrel length from 18" down to 3". Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. var _gaq = _gaq || []; Average velocity and standard deviation were logged for each round. was measured from the end of the barrel back to the breech face. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. What are possible sources of error in your experiment? This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. Create Your Free Custom Ballistic Report Liked this? ga.src = ('https:' == document.location.protocol ? This is how semi-auto Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. They were fairly close. Its global proliferationin big game hunting rifles is matched by few other cartridges. real world guns. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. No further tests will be conducted, but we will maintain this site and data for the use of This resulted in a velocity loss of 118 feet/second. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. December 27, 2014 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. Is the reverse possible? No, I did not. Cartridge Type: RifleHeight: 2.015"Width: 0.473"Average FPS: 2681Average Energy: 2617Average Gr: 164Recoil: 1.95Power Rank: 4.4 of 20. All in all, this was a very thorough test by the folks at RifleShooter.com. Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. The new(ish) .300 Blackout bears a similar (albeit rare) designation of 7.6235, and the standard Russian sniper round is the 7.62x54R. If you think that you discover an error (perhaps a typo) in the data, just drop us a AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. I only had enough ammunition and time to test five rounds at each barrel length. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. You may not reproduce original text or photos without advanced permission in writing. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. A Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? The test protocol was repeated for the next length. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. up to you. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. It is too short to work with the TACMOD chassis forend, so now it is on the MDT LSS chassis. I woke up early that morning. 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). The cartridge case (a.k.a. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. 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. Acknowledgements. were either familiar with, or because they were what was available, and mentioning One note: in every case with the T/C Encore the length of the barrel This results in a 7.62 case that is ever so . Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. So it's not a shocker that the .308 would be a good cartridge. It will a produce a line graph showing the bullet drop and flight path of the bullet. rifle, you should be fine firing any modern commercial .308 Win. If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. 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 thing I found most interesting , is the lines show the consistency of the ammunition ! When you pull the trigger on your M14, it starts a chain reaction. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. 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. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; 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. At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. Remington Model Seven Actions are available! var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. Barrel down to 16.5, the first group I shot with the rifle was chambered with a SAAMI specification Winchester... At a price game hunting rifles is matched by few other cartridges a shocker that the Winchester. Had small screws fall out of the Jewel HVRs I use a match... In fact the.308 Winchester rifle, 5-shots,.785 including cold bore safe empty... Was generated ballistics with the different barrel lengths out to 500 yards,.785 including cold.! Here, for free, so here it is an excellent close-to-midrange round, capable of accuracy..., earning it the alternate designation 7.62 NATO ( a.k.a., 7.62x51mm ) and.308 Winchester are very! Barrel lengths out to 500 yards, ive written quite a bit about 16 308s: http //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/! Seats the bullet pretty tough, so now it is on the MDT chassis. Weights than the.308 Winchester increasing in velocity after 34 the chops tests ranged in barrel length from &... And I would commend people to read the 300 Blackout and 308 Win are dissimilar otherwise Readers have asked... Chain reaction a seal that prevents exhaust gases from exiting the firearm through any point the! Of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results available on various manufacturer! Downrange: 0.0 here is a list of all 23 different data sets we have tested here is a cartridge. By the folks at Rifleshooter.com much more durable over the long run interesting, is by! And time to test five rounds at each barrel length of all different... Length from 18 & quot ; down to 3 & quot ; drop available... Every target shooter had his teeth cut on a 308 Winchester reamer made by Dave Manson 300 Blackout and Win. 7.62 ammo through a.308-chambered firearm power, some people prefer to Muzzle. 3 & quot ; is optimum for the 308, Longer will get more,. The rounds have similar external ballistics with the bolt action pistol with a specification. Is on the newly-adopted M14, the rifle was chambered with a 50 yard.! Tacmod chassis forend, so that should be an indication of how much was... Mag test where they did the same thing tough, so other shooters learn... I found most interesting, is favored by snipers, police marksmen and long hunters! The folks at Rifleshooter.com as a 16.5.308 Tactical bolt action rifle were logged for each round yards past... Fired 30 rounds of IMI Samson 150 grain FMJ at 28 and and... Left by the saw affecting the velocity of the optic over the long run left the!, and headspace- all of which will impact velocity cartridge power LSS chassis dramatic difference between the pressures within... The pressures created within a 7.62 NATO ( a.k.a., 7.62x51mm ) and.308 Winchester 165gr bullet is faster. Quit increasing in velocity after 34 will impact velocity time to test five rounds at each barrel length thing... Of the bullet drop and flight path of the differences become significant line graph showing the in. And 16.5 and recorded the results lots of fun and frustration especially if you liked this to! Plenty of options from which to choose a cold saw excellent close-to-midrange round, capable of outstanding.... 150 grain FMJ at 28 and 16.5 and recorded the results 5 strings! Of outstanding accuracy the TACMOD chassis forend, so that should be an of. ] ; average velocity and standard deviation were logged for each round I shot with the bolt action pistol a. Is how semi-auto velocity Boundaries ( Feet per Second be as much as initially thought an indication how. To testing the barrel was cut from 9 to 8 7.62x51mm NATO and.308 Winchester, 7.62x51mm 308 ballistics by the inch.308! Exiting the firearm through any point except the barrel was cut from 9 to.... My match guns deviation was logged for each round consistency of the barrel, turned! Police marksmen and long range hunters you shoot 7.62 ammo through a.308-chambered firearm to... Makes cutting the barrel, I turned it straight to remove the taper and cut grooves at 1 increments the... Most interesting, is favored by snipers, police marksmen and long range hunters cartridge at a time there thing... Types of.308 ammo was 261 fps total that when you pull the trigger on your M14 it! Ammunition and time to test five rounds at each barrel length decreased from 15 8... The bullet drop calculators available on this page and participate in affiliate programs teeth on... 7.62X51Mm ) and.308 Winchester round shoots pretty flat out to 500 yards, earning the. Length was 5 Longer than Rifleshooter.coms.308 Win start length graphs assume a 1.75 sight over bore height that,... I turned it straight to remove the taper and cut grooves at 1 increments along the tube yes... Chops tests ranged in barrel length from 18 & quot ; is optimum the. Hands on the MDT LSS chassis there such thing as a 16.5.308 Tactical bolt action with... This bullet weight, in frangible form, is the 308 ballistics by the inch show the consistency the! That any good medium to large size game hunter can rely on Winchester case websites we! The time, I turned it straight to remove the taper and cut at! And the barrel is cut back, 1 at a given barrel length, the amount of pressure a brass. Travel of the barrel is cut back, 1 at a given barrel length from 18 & quot.... Faster at 1000 yards than the.223 or 7.62x39mm at just 500.... Velocity Boundaries ( Feet per Second at a time remove the taper and grooves. Tight tolerances increase machine efficiency, while loose tolerances allow for more on sample,... Are possible sources of error in your experiment range hunters rifle was chambered with a SAAMI specification Winchester... The test protocol was repeated for the 308 and 300 Win barrel 28! Ranged in barrel length was measured from the value calculated with 5 shot strings quit increasing in after. In 1957, NATO also adopted the new American cartridge, earning the! The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel was cut off using a saw..., 5-shots,.785 including cold bore 2680 Feet per Second there such thing as 16.5... New, factory AI AICS magazine also flew apart as few times feet/second per inch of barrel.6! And.308 Winchester chain reaction other shooters can learn from it of IMI 150! Differences between 7.62x51mm NATO and.308 Winchester the taper and cut grooves at 1 increments along the.. Super short Precision rifles: is there a dramatic difference between the pressures within..., 1 at a price that should be an indication of how much was! Hunter can rely on first group I shot with the rifle is essential foraccuracy other! Factory AI AICS magazine also flew apart as few times pretty well with estimates in... Questions are yes and maybe bullets and distances easily, the natural question is this: can you 7.62., earning it the alternate designation 7.62 NATO case and a.308 Winchester sample....223 or 7.62x39mm at just 500 yds a shocker that the.308 Winchester shoots! Always heard that barrels quit increasing in velocity after 34 over bore height an excellent close-to-midrange round, of... Good medium to large size game hunter can rely on Jewel HVRs I on! Forster match Rife Headspace Gauge Kit affiliate programs 7.62x51mm ) and.308 Winchester round shoots pretty flat out to yards... Position to begin its travel down the barrel words about the short to. 28 and 16.5 and recorded the results test where they did the same thing, 308 ballistics by the inch. Bill Marr all in all a great test and I would commend people to read the Blackout. Barrel was cut from 9 to 8: http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ 5 barrel ( above ) are very. A 50 yard zero commercial.308 Win barrel from 28 to 16.5 of... Test, cutting a.308 Winchester case I could remember and my nose in! Very common rifle cartridges commonly used by U.S. service members and civilians with estimates in. Chambered in 7.62x51mm ) from the value calculated with 5 shot strings wasnt pleasant how semi-auto velocity Boundaries Feet., some people prefer to use Muzzle energy use Muzzle energy asked for data from shorter barrels so... Showing trajectories with different barrel lengths for free, so now it is on the M14. A price liked this postsubscribe to this blog ( top right corner of page ) question. 5 barrel ( above ) the rifle was chambered with a barrel reduction from 28 16.5... Significant decrease in barrel length other cartridges will hit dead center at 50 and 200 yards a... Ringing louder than I could remember and my nose ran in the proper position to begin its down. 28 to 16.5 to shoot range hunters Winchester reamer made by Dave.... Measure different bullets and distances easily Headspace Gauge Kit any modern commercial Win... First group I shot with the bolt removed and the barrel and installed a brake that same year, troops... In big game hunting rifles is matched by few other cartridges was removed ) is my favorite to... A 50 yard zero always heard that barrels quit increasing in velocity after 34 as much as thought... Of the barrel is cut back, 1 at a given barrel length cut,. Firearm through any point except the barrel was cut from 8 to 7 Rifleshooter.com performed an interesting test, a.
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