Weight of the rifle, including bipod, optic and mount was 18.28 pounds with a 24.25 inch barrel. 308 Winchester 7.62x51 18" Barrel 7.62x51 20" Barrel 30-06 Springfield 300 PRC (NEW) 30-378 Weatherby; 300 H&H Magnum 300 Remington Short Action Utlra Mag 300 Norma Magnum (NEW) 300 Winchester Magnum (NEW) 300 WSM 300 Weatherby Magnum 300 Remington Ultra Magnum (NEW) We headed to the range with a 300 Winchester Magnum, a chronograph and my hacksaw. regulated countries are currently (2013) proof tested at 537.50 MPa (77,958 psi) PE piezo pressure.[10]. 300 ACC Blackout 30-30 Winchester (NEW!) It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet. The Weatherby's standard length magnum case was soon noticed. Many consider the .300 Winchester Magnum to be on the lighter side of what is required for the largest bears, but hunters have had success with the cartridge against these large bruins.[16]. The .300 Winchester Magnum is well-suited for 95% of the world's game. While in hunting situations such accuracy is unnecessary, such accuracy does aid in the extending the range of the cartridge. [12] It is particularly useful when hunting the members of the ungulate family such as elk and moose and is a popular cartridge among hunters for these class 3 game species. Most, while well informed, are based off of data extrapolation and comparing a few different barrel lengths on dissimilar rifles. My follow up article is here Does size matter? As the bullet will take up volume which could have been taken by the propellant velocity advantages diminish as the weight of the bullet increases. This created the much criticized short neck of the .300 Winchester Magnum. This is especially useful for hunters, who in many will hold center mass of a vital area on game and don’t want to dial in a correction. I’m going to install a brake, crown the barrel the right way and be the proud owner of a 16.25 inch 300 Winchester Magnum barrel… I’m unsure I’ll shoot it much, if at all, but at least I can definitively tell someone what happens when you cut your 300 Winchester Magnum to 16.25 inches. Elk can weigh as much as 450 kilograms (1,000 lb) and moose 640 kilograms (1,400 lb). Speed and Trajectory: The big difference here is that the 300 win mag will send a 180 grain bullet, which is at the top end of the 308’s abilities, at almost 3000 fps. The .300 Winchester uses the same case head design of the .375 H&H Magnum, its parent cartridge. Launching a 180-grain bullet to 2,925 fps, the.300 H&H betters the velocity of the.30-06 by more than 200 fps. Bullet weights of 10.7–13.0 grams (165–200 gr) are the preferred choices for these game species. Controlled expansion bullets such as the Nosler Partition or Barnes X are preferred rather than more lightly constructed bullets for these larger species of ungulate. The short neck was thought to hinder accuracy because it would prevent the alignment of cartridge to the bore, but this is rarely an issue either today or when the cartridge was designed. At the range I looked at my shooting buddy and we decided to go all in and cut it to 16.25″. For four ammunition manufacturers the cartridge case capacities are provided as: The .300 Winchester Magnum is powerful enough to hunt any North American game animal. Both black bears[14] and grizzly bears[15] are hunted using the cartridge. A Shilen #8 contour chrome-moly barrel had been threaded and chambered on the gun. To put this into perspective, a Boeing 737 commercial airliner travels at a cruising speed of 600 mph, or 880 fps. Taken together with its performance it remains one of the most useful and popular cartridges today. The initial barrel length was 24.25 inches. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .300 Winchester Magnum can handle up to 430.00 MPa (62,366 psi) Pmax piezo pressure. Lets take a look at drop and drift at 1,000 yards (the internet’s favorite distance) for each length barrel. Recoil from the .300 Win Mag is noticeably higher than the well-known and popular .30-06 Springfield. Removing a fixed choke from a shotgun barrel and installing a choke tube system, Installing a SAKO extractor in a Remington 700/ Model Seven, Remington 870 Flexitab system and parts identification, Building a custom Tikka T3/T3X precision rifle, Change ft/sec in velocity from 24” barrel, AVG in velocity change in ft/sec per inch. Firing the rifle with the 24.25 inch barrel was pleasant (for a belted magnum) with minimal muzzle rise. regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. Built with parts ordered from Brownells, the test gun is a factory Remington 700 Magnum action, seated in a AICS chassis system, equipped with Victor Company’s Viper Skins. The Chattanooga Police Department[24] and Minot Police Department S.W.A.T units[25] and the L.A. County Sheriffs Department's Special Enforcement Bureau[26] which have adopted the .300 Winchester Magnum in some capacity. Sub 1 minute-of-angle (MOA) accuracy out to 1,000 yards (910 m) is not unusual in precision-built rifles firing match-grade ammunition. In C.I.P. As a testament to its accuracy, since its introduction it has gone on to win several 1,000-yard (910 m) competitions.[5]. It moves them at 3180 fps. Custom Remington 700 16.5″ 300 Winchester Magnum follow up, Blueprinting, or truing a rifle action ensures the receiver face, threads, lugs, bolt lugs and bolt face are square to the center line of the receiver. Finally, the lure of potential internet greatness set in and I decided to pull the trigger. Federal 92.0 grains of H2O (5.96 ml) Mag. Barrel length, Barrel length and velocity, Cartridge Selection, Precision Rifles, Rifles It’s time to see what happens to the same gun, under the same conditions, as the barrel is set back one inch at a time. If (and that’s big if) I do it again for another cartridge I’ll probably fire more rounds at each interval, shoot a slow and fast powder at each length, and use a light contour barrel since it would be easier to cut. My long ranger: Surgeon 1086 Long Action in 300 Winchester Magnum. The down side to this performance is recoil. Recoil and muzzle blast increased significantly when the barrel reached 20.25 inches in length and again below 18.25 inches. Hover over graphs and lines to see more d… However, the.300 Ultra Mag also has a lot more recoil than the.300 Win Mag. If Winchester had released the cartridge prior to 1960, the cartridge would have been similar to the .30-338 Winchester wildcat cartridge. 30-06 vs 308 vs 300 Win Mag Ammo This is the first day the gun will be fired. Yes, it did, but less then expected. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. Elk can weigh as much as 450 kilograms (1,000 lb) and moose 640 kilograms (1,400 lb). [27] However, by the time Winchester got around to designing their own .300, the .308 Norma Magnum and the .30-338 were already on the scene. The test protocol was simple. The science of projectiles and firearms, or in other words, the info you need to make the kill!If you are looking for the 270 vs 308 vs 30 06 ballistics chart, the 5.56 trajectory chart, the 300 Win Mag Ballistics data, or the 30 06 trajectory chart; you are in the right place!Here are a few suggestions for using the below dashboard: 1. Prior to the design of the .300 Winchester Magnum there were several cartridges that provided what could be best described as a magnum level of energy. He said the ground 15 feet in front of the muzzle was blowing around. The data was summarized in 308 Winchester / 7.62x51mm NATO: Barrel Length […], The flat shooting and light recoiling 6.5 Creedmoor was introduced by Hornady in 2007. 300 Ultra Mag vs 300 Win Mag The.300 Ultra Mag can fire the same weight bullet approximately 200-300fps faster than the.300 Win Mag. Both the .300 Win Mag and 7mm Rem Mag have specific rounds that show a much higher velocity and also rounds that fall lower on the graph. The .300 Winchester Magnum (also known as .300 Win Mag or 300WM) (7.62×67mmB) is a belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16″ 300 Win Mag? The .300 Win Mag sees use in long-range benchrest shooting competitions and has been adopted by law enforcement marksmen and by a few specific branches of the U.S. Military for use by snipers. Chronograph data was recorded using a MagnettoSpeed V2 barrel mounted ballistic chronograph. I developed a mild headache from the 50 rounds of ammunition I shot, despite wearing both ear plugs and muffs. There has been some speculation that if the cartridge was released earlier, the dimensions of the cartridge would have matched the .30-338 Winchester wildcat cartridge. The .300 Winchester Magnum was designed with a neck which is shorter than the diameter of its bullet. While there may be differences in the effects on the quarry from the velocity, the difference in maximum point- blank range is relatively small  (34 yards) between the 24.25 (327 yards) and 16.25 inch (293 yards) barrels. According to the U.S. Navy this ammunition should increase the maximum effective range of .300 Winchester Magnum sniper rifle systems to 1,500 yards (1,370 m), decrease wind deflection on bullets in flight and use Hodgdon H1000, a reduced muzzle flash propellant that remains temperature stable across an operational temperature range of −25 °F to +165 °F (−32 °C to 74 °C). The .300 Winchester Magnum can be used to hunt everything from the dik-dik to the giant eland. The ability to zero the .300 Winchester Magnum and shoot without hold over to 270 metres (300 yd) makes the cartridge one of the flatter shooting cartridges. The most useful bullet weights for the .300 Winchester Magnum are those weighing between 150–200 grains (9.7–13.0 g). SAAMI recommends a bore diameter of 7.6 millimetres (0.300 in) and a groove diameter of 7.8 millimetres (0.308 in). The.300 Win Mag shoot heavier bullets at a higher velocity than the.30-06 (~200-300fps faster with the same bullet). If we were to take averages of all the rounds, then there would be a slight advantage to for the 7mm Rem Mag rounds at each yard marker and each time the difference is less than 100fps. 300 Win Mag. [13], The .300 Winchester Magnum cartridge is very effective on dangerous class 3 game such as bear. I want to read about your 300 Win Mag loads and velocities with the 215 and 230 Berger Hybrid Target bullets, specifically for Hodgdon and IMR powders. The.308 Win. A commonly asked question on hunting, long range shooting and Mil/LE forums is, “how long should the barrel on a 300 Winchester Magnum be?”   I’ve been coming up short of any objective analysis of barrel length based off of actual data- i.e., cutting back the same barrel and publishing actual velocities. Standard deviation generally decreased as the barrel got shorter. Controlled expansion bullets such as the Nosler Partition or … Initially we (it’s always good to bring a friend with this much cutting) used a cordless Sawzall to make the cuts, after the battery died, we switched to a hacksaw. Norma 95.5 grains of H2O (6.19 ml), .300 Winchester Magnum SAAMI cartridge dimensions. The lengthening of the case and the move of the shoulder forward over the .338 Winchester Magnum allowed for the reaming of the .308 Norma Magnum or .30-338 Winchester chamber to dimensions of the .300 Winchester Magnum. There is overlap between the rounds of the different cartridges, and this trend continues through the entire 500-yard range, but we do see an average higher velocity for the .300 WM over the .30-06. As for the 208 gr bullet I don't use that in the win Mag but my 300 Rum. Hunters found the cartridge to be an effective all-around choice with bullet options ranging from the flatter shooting 165 grain to the harder hitting 200+ grain selections available from the factory. The 300 Win Mag’s short case neck is not detrimental to accuracy, and it is actually capable of near bench-rest like groups with the proper load in a high quality rifle. The SAAMI specification .300 Winchester Magnum case capacity is 91.5 grains of H2O (5.93 ml). Even at these velocities, though, the cartridges maintain the legendary accuracy the .300 Win. Winchester developed the .300 Winchester Magnum by taking the .338 Winchester Magnum, which was introduced in 1958, and moved the shoulder forward by 4.0 millimetres (0.156 in) and lengthening it by 3.0 millimetres (0.120 in). [9] [6], The .300 Winchester Magnum was introduced in 1963 by Winchester for use in the Model 70 rifle. McPherson. [citation needed] However, bullets weighing between 7.1–16.2 g (110–250 gr) are available to the reloader for the .300 Winchester Magnum. Weight (lbs) has a big appetite for propellant, burning 20 to 25 percent more propellant for only a 10 percent increase in velocity over the .30-’06 Sprg. 0. 300 Win Mag 180 gr SST® Superformance® Item #82193 | 20/Box US Patent: 8,161,885 | 8,413,587. Bill Marr This ammunition was developed as a .300 Winchester Magnum Match Product Improvement (PIP) and uses the 220 gr (14.26 g) Sierra MatchKing Hollow Point Boat Tail (HPBT) very-low-drag bullet fired at a nominal muzzle velocity of 2,850 ft/s plus or minus 50 ft/s (869 m/s ± 15.2 m/s). AADMount Caps, McMillan A5 custom Stock, Atlas PRS bipod, Rifles Only Sling, Wiebad front and rear bags. Rifleshooter.com and its authors,do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. The venerable 300 Win. Weight decreased 1.82 pounds to 16.46 pounds with the 16.25 inch barrel. Discussing the methodology with friends, I originally envisioned stopping around 20″, cutting off the chamber end of the barrel and using it for a 308. Its recoil is about 30% greater than that of the .30-06 Springfield,[11] which is known as a 'stout' cartridge. As illustrated in the chart, .300 Weatherby Magnum rounds - on average - achieve a velocity of about 3230 feet per second (fps) while .300 Winchester Magnum rounds travel at a velocity of 3030 fps. The.300 Win. The SAAMI Maximum Average Pressure (MAP) for this cartridge is 441.3 MPa (64,000 psi) piezo pressure (54,000 CUP). Just purchased a Rem 700 Sendero SFII, 300 WinMag with a 26" tube and a 1:10 twist. While it wouldn’t be your first choice for hunting ammunition, Federal Gold Medal works well, is widely available, and serves as a good standard for comparison. In this article, we will start with a new Remington 700 short […], Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges. With its velocity, low bullet drop and high energy retention, the .300 Winchester Magnum is useful for hunting sheep even at extended range. “The 300 Win. Accuracy and terminal performance are the cornerstones of Hornady ® Precision Hunter ® factory loaded ammunition. defines the common rifling twist rate for this cartridge as 254 mm (1 in 10 in), 6 grooves, Ø lands = 7.62 mm (0.300 in), Ø grooves = 7.82 mm (0.308 in), land width = 2.79 mm (0.110 in), and the primer type is large rifle magnum. In some cases, the point of impact was unchanged. Never miss a post! The goal of this article is to help you determine which .300 Win Mag Rifle is best for you. Since its introduction the cartridge has remained extremely popular. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard rifle action. This was an experiment I kicked around for the past year or so. Mag. Notably, the .300 Win Mag cartridge fires a projectile that on average can best the .308 Winchester cartridge by 50% on overall distance while maintaining lethality. The .300 Win Mag remains the most popular .30 caliber magnum with American hunters, despite being surpassed in performance by the more powerful .300 and .30-378 Weatherby Magnums and the newer .300 Remington Ultra Magnum. Mag., or become just another .300 magnum … Live fire tests were conducted in March 2013 against ballistics gelatin, light material barriers, and other targets to determine the projectile's ability to perforate targets. December 25, 2013 This results in a flatter trajectory, more resistance to wind drift, and more retained energy at longer range. Although the .300 H&H Magnum, .30-338 Winchester Magnum and the .308 Norma Magnum had a head start on the .300 Winchester Magnum these cartridges soon faded into obsolescence. The case volume will vary from manufacturer to manufacturer to such a degree the reloading software suite QuickLOAD provides five differing cartridge case capacities, that for reloading purposes significantly differ between manufacturers. PSA: Don’t melt your MagnetoSpeed with a suppressor! Sorry, your blog cannot share posts by email. A 165 grain bullet is probably a better choice for the.300 Win. Each reduction in barrel length averaged 39.6 ft/sec in velocity loss. A 3 ft/sec increase in muzzle velocity was recorded between the 22.25 and 21.25 inch barrels. [17][18][19] The 3.55 in (90.2 mm) long MK 248 MOD 1 or alike ammunition is not offered commercially, since it exceeds SAAMI standards for overall length and maximum chamber pressure. Compared with the 30-06 Springfield the .300 Winchester Magnum provides a roughly 400 ft/s (120 m/s) increase in velocity. can nudge a 200-grain bullet to about 2,400 fps and generate muzzle energy of about 2,550 ft lbs. Remington 88.0 grains of H2O (5.70 ml) Troubleshooting seized ejectors. They have amassed a lot of data on various cartridges (mostly handgun). wins here because it has the powder capacity to handle bullets as heavy as 220 grains, moving them as fast as 2,770 fps to generate a bone-crushing 3,800 ft lbs of energy. It has the same 2.85-inch case as the.375 H&H, requiring a magnum-length action, but it also has plenty of case capacity. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? Rifle. This caused the cartridge to have a neck shorter than the diameter of the bullet. The popular .30 caliber's omission from that lineup was not missed. [20], According to JBM Ballistics,[21] using the G7 ballistic coefficient provided by Bryan Litz, and a Weapon Employment Zone (WEZ) analysis of the XM2010 rifle with various .300 Winchester Magnum ammunition types by Bryan Litz, the MK 248 MOD 1 .300 Winchester Magnum cartridge, when fired at its nominal muzzle velocity of 869 m/s (2,850 ft/s), should have 1,286 to 1,289 m (1,406 to 1,410 yd) supersonic range under International Standard Atmosphere conditions at sea level (air density ρ = 1.225 kg/m3). The fact that the cartridge has gone to win many 1,000-yard (910 m) matches suggests that such a concern is unfounded. Review: Shooting the MAGPUL Ruger 10/22 Hunter X-22 Stock, Bipod rail installation (Atlas bipod adapter), How to remove a stuck case from a sizing die. The maximum point blank zero, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when hold center mass. If you do not have a Shooting Chronograph, I strongly suggest you purchase one. However, the handloader can take advantage of modern advances in powder technology and actually exceed the velocity of the MK 248 MOD 1 cartridge while still loading to maximum SAAMI cartridge overall length, and maintaining safe pressure. So, what does this mean downrange? Krieger Heavy Varmint (fluted) with JEC Custom Brake. After bore sighting the rifle and confirming zero at 50-yards. Mag., which has been roaming the fields since 1964, cranks that up to 2,950 fps and 3,478 f-p energy. Due to the short neck, heavier bullets particularly those weighing greater than 13 grams (200 gr) and mono-metal bullets such as the Barnes X bullets will need to be seated more deeply into the cartridge. Military and law enforcement departments adopted the cartridge for long range sniping and marksmanship. Although cartridges such as the .30-378 Weatherby Magnum, .300 Remington Ultra Magnum and the .300 Weatherby Magnum all exceed performance of the .300 Winchester Magnum none of these cartridges can be chambered in a standard length action. The .300 Winchester Magnum is known for its accuracy and has been used for 910-metre (1,000 yd) and 1,000-metre (1,100 yd) competitions. Remington 870 extractor identification: MIM v. bar stock. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. Due to the power and performance of the .300 Winchester Magnum cartridge the cartridge is more likely to be employed by specialist units within a police department rather than as a general service weapon issued to law enforcement agents. Great care has been given by Hornady engineers to develop superior, match­-accurate hunting loads that allow the ELD­-X ® bullet to achieve its maximum ballistic potential. The Winchester's factory ammunition for the .300 Winchester Magnum is capable of 990 m/s (3,260 ft/s) with the 150-grain (9.7 g) bullet and 910 m/s (3,000 ft/s) with the 12-gram (180 gr) bullet, however old Western "Power Point" soft point can reach past 1,000 metres per second (3,400 ft/s) with 9.7 g (150 gr) projectiles. The Weatherby cartridges involved blowing out (reducing the taper) of the Magnum H&H cases, bottlenecking them to the required caliber and shortening them to fit the standard rifle actions of the era. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized. 300 Win Mag 200 gr ELD-X® Precision Hunter® Item #82002 | 20/Box . This translates to about 20% greater energy advantage over the 30-06 Springfield cartridge. Jewell Trigger, Spuhr Mount with Schmidt-Bender PMII 5-25x56 Illuminated P4 Fine. The table below assumes a 100 yard zero and a full value, 10 mph crosswind for wind drift. It is particularly useful when hunting the members of the ungulate family such as elk and mooseand is a popular cartridge among hunters for these class 3 game species. Significant jumps in velocity reduction occurred between 18.25 and 16.25 inches (56, 65 ft/sec) and between 23.25 and 22.25 inches (65 ft/sec). More retained energy at longer range based off of data extrapolation and comparing a few different barrel on. | 20/Box in velocity Mag vs 300 Win Mag is noticeably higher than the diameter of 7.6 millimetres 0.110., despite wearing both ear plugs and muffs disclosure: some links on this are! Was 18.28 pounds with the saw cut, as-is Does aid in the the. V2 barrel mounted ballistic chronograph our rounds, we see a slight difference in muzzle velocity with 16.25! 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