Also, many rifles available today now have effective recoil attenuating features built into them, such as muzzle compensators and energy absorbing stocks and butt-pads, that can significantly lessen recoil as it is felt by the shooter. Beginning with the .270 Weatherby Magnum in 1943, Roy Weatherby introduced a line of cartridges that while based on the Magnum H&H case were shortened to fit a standard length (2.5 in [63.50 mm]) action. It is an excellent cartridge choice for all plains game under 680 kilograms (1,500 lb). 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. 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. But of the dozen or so .300 magnum cartridges, either short or tall, fat or slim, the .300 Win. Bullets weighing 9.7–10.7 g (150–165 gr) are adequate for smaller deer such as the mule deer and white-tailed deer. 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. dcopas78; Sep 16, 2018; Ammunition and Reloading; 2. This translates to about 20% greater energy advantage over the 30-06 Springfield cartridge. The down side was a neck which was shorter than the caliber of the bullet it fired, which meant that the bullet had to be seated more deeply in the case. With bullets of good sectional density and ballistic coefficients the cartridge possesses the long range performance necessary to take large game species at extended ranges. Due to its ability to shoot flat and carry its energy efficiently, the cartridge is one of the more favored rounds for African plains game. On the other hand, recoil is subjective (some are more sensitive to it than others) and one can get used to it with practice. The Norma will be faster, but not as fast as a 300 Lapua or 300 Lapua AI. All sizes in inches (in) and millimeters (mm). Remington / Southpoint .300 Win Mag Long Range.75 MOA Guaranteed with factory match ammunition - .50 MOA Guaranteed with hand loaded ammunition. 1. Mag.’s 25-degree shoulder. I always play with bigger 30's, but I will never be without a 300 win mag that is ready to go. 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). The maximum point blank range for the 9.7 g (150 gr) bullet is 291 metres (318 yd) yards when zeroed at 250 metres (270 yd). Winchester Model 70 Super Grade. Forums. Since its introduction the cartridge has remained extremely popular. Mk248Mod0 (A191) = 190gr Sierra Match King at 2900fps Mk248Mod1 = 220gr Sierra Match King at 2830fps You must log in or register to reply here. Military and law enforcement departments adopted the cartridge for long range sniping and marksmanship. Browning X-Bolt Hunter 300 Win Mag Bolt Action Rifle. Most 180-grain loads, when zeroed at 200 yards, will print in the neighborhood of 6 inches low at 300 and 18 inches low at 400. It’s an excellent all-around cartridge, whose performance allows for superb accuracy as well as stopping power. It will flat get it done with a 215 Berger and you will see 3K plus with that 28", maybe 3050. According to the official C.I.P. The projectile diameter should be 0.309 in (7.85 mm) [8]. Replies 22 Views 6K. 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. 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. The .300 Winchester Magnum can be used to hunt everything from the dik-dik to the giant eland. Compared with the 30-06 Springfield the .300 Winchester Magnum provides a roughly 400 ft/s (120 m/s) increase in velocity. Norma 95.5 grains of H2O (6.19 ml), .300 Winchester Magnum SAAMI cartridge dimensions. The SAAMI Maximum Average Pressure (MAP) for this cartridge is 441.3 MPa (64,000 psi) piezo pressure (54,000 CUP). What this means is that the longer case of the .300 Win Mag can handle more powder, which allows for a higher muzzle velocity. The 180 grain load is an outstanding choice of.300 Win Mag ammo for elk, moose, or bear hunting while the the lighter 165 grain load is perfect for deer, pronghorn, and bear. As a testament to its accuracy, since its introduction it has gone on to win several 1,000-yard (910 m) competitions.[5]. With the average load for the .300 Winchester Magnum, the recoil energy is roughly 30 ft lbs. This was the first time the Pentagon's Director, Operational Test and Evaluation (DOT&E) tested the round, which can hit targets out to 1,200 m (1,312 yd).[23]. You can read about the history of the Mk248 ammo on the history of 300WM sniping page. Mk248Mod0 (A191) = 190gr Sierra Match King at 2900fps, Mk248Mod1 = 220gr Sierra Match King at 2830fps, HSM 168gr = HSM 168gr HPBT Sierra Match King at 3150fps, Win ETip = Winchester 150gr ETip at 3260 fps. 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]. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) have provided specifications for the .300 Winchester Magnum cartridge. [9] WVgoodguy22; Jul 16, 2019; Ammunition and Reloading; 2. [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. The ammunition standards organizations SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) and C.I.P. The flat trajectory of the.300 Win Mag bullet allows skilled hunters with calibrated optics the ability to hit targets at 500 or even 1,000 yards away. The .300 PRC’s case is the same diameter as the .300 Win. The.300 Win Mag factory loads, on the other hand, use bullets in the 15-230-grain range. SAAMI recommends a bore diameter of 7.6 millimetres (0.300 in) and a groove diameter of 7.8 millimetres (0.308 in). [3], The .300 Winchester is extremely versatile and has been adopted by a wide range of users including hunters, target shooters, military units, and law enforcement departments. B. The .300 runs in a standard long-action, and though it retains the belt from the H&H parent case, headspacing off that belt, I prefer to set up my handloads to work off the shoulder. Advice on reloads and or factory ammo for my soon to be new rifle the NEW Savage Model 110 Long Range Hunter in .300 WSM? Remington .300 Win Mag 700 XCR Tactical Bolt Action Rifle (R/H) - New Bullet weights of 10.7–13.0 grams (165–200 gr) are the preferred choices for these game species. 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. is available in such a wide variety of rifles. The Federal Gold Medal Match 300 Win Mag load with 190gr SMK is an example of a commercial equivalent of the A191 military load and has become a popular long range load in the civilian market as well. This greater recoil can make the .300 Winchester Magnum, despite its inherent accuracy advantages, a harder cartridge to shoot accurately, when compared to non-magnum .30 caliber cartridges such as the .30-06 Springfield or the .308 Winchester. Mag. Higher sectional density, better penetration… A lot of new things have happened with the 300 Win Mag over the past few years. 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 .300 Win. Mag. In C.I.P. Several companies, among them HS precision, Kimber and Remington manufacture rifles chambered for the .300 Winchester Magnum specifically targeted at law enforcement agencies. The heritage of .30 caliber (7.62 mm) magnums can be traced back to the .30 Newton in 1913 and to the .300 H&H Magnum in 1925. Only the .300 Winchester Magnum was to survive as a readily available cartridge. The.300 WSM rounds are not too far off staying in the range of 24 to 26ft.lb range. Almost no divergence between C.I.P. Bare H-1000 77.7 grs / Same load can be used in older Blue bag Winchester brass. https://en.wikipedia.org/w/index.php?title=.300_Winchester_Magnum&oldid=994984252, Short description is different from Wikidata, Articles with unsourced statements from July 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 December 2020, at 15:58. However, despite the differencesin case length, the cartridges are the exact same overall length. Although this is a fairly popular debate lets compare the 300 Win Mag to the 7mm Rem Mag and look at the actual numbers. .300 Win Mag 180 gr 3060 fps @100 yards 3,279 ft lbs. The most useful bullet weights for the .300 Winchester Magnum are those weighing between 150–200 grains (9.7–13.0 g). 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). 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 .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. C.I.P. Recommended twist ratio is 1:10 (254 mm). Sauer .300 Win Mag 101 Classic ( ) Bolt Action Rifle (R/H) - New And what good are range and power if you don’t have the 4 best scopes for .300 Win Mag: The Leupold VX-I Rifle Scope. Note: We have selected two loads here, the A191, also known as the Mk248Mod0, which is the same as the Federal Match .300 WM 190gr and the new Mk248 Mod1 220gr load. For the ranges your BIL will probably be shooting animals at, I doubt there will be any advantage to a 7mm. Firstly, it has a versatile three to one zoom ratio erector system. With its velocity, low bullet drop and high energy retention, the .300 Winchester Magnum is useful for hunting sheep even at extended range. regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. 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. With an optic zeroed at 250 yards, a factory 180gr.300 Win Mag bullet has an effective range of about 300 yards before needing hold-over to compensate for bullet drop. Bullbrl. The .300 Winchester Magnum was designed with a neck which is shorter than the diameter of its bullet. A popular long range load for the 300 Win Mag near this range is the 190 grain Berger VLD. So if you have a deer some 200 yards away from you and you are using the 300 with a bullet of 165 grain, you would need a correction of somewhere around 38.5”. The 300 PRC and win mag are basically ballistic twins. Mag. is the most successful and popular of the Big .30's and the only one among the 10 best selling rifle cartridges. accommodates long range bullets just fine. and SAAMI dimensional values exist for this cartridge. Taken together with its performance it remains one of the most useful and popular cartridges today. New posts Search forums. It shoots like a laser. The Secret Service does use the .300 WM, but they’re situation is rare and unique and they do not typically have to be concerned with hostage situations. The .300 Winchester Magnum is powerful enough to hunt any North American game animal. In 1958 Winchester introduced three cartridges – the .264 Winchester Magnum, .338 Winchester Magnum and the .458 Winchester Magnum, all based on the shortened and blown out .375 H&H Magnum case. [22], In January 2014, the U.S. Department of Defense annual testing report found that the older A191 or MK 248 Mod 0 .300 Winchester Magnum service round loaded with aerodynamically less efficient 190 gr (12.32 g) Sierra MatchKing Hollow Point Boat Tail (HPBT) bullets fired from the XM2010 demonstrated adequate performance and lethality. The .300 Winchester uses the same case head design of the .375 H&H Magnum, its parent cartridge. Monday at 10:14 PM. New posts New articles New article comments New profile posts Latest activity. Because Hornady knew full well that one pile of hunters shot the cartridge and paired rifles, and it would be accepted if the 300 Win Mag handled it well. “I used the .300 Win Mag for most of my kills. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16″ 300 Win Mag? Recommendation: The .300 WM is high recommended for military use, but not so for Law Enforcement use. On average, the.300 Win Mag does have a flatter trajectory with a difference of.78” (300yds), 1.96” (400yds), 3.76” (500yds), 5.74” (600yds), and 8.54” (700yds). If we look at individual rounds and disregard the cartridge, the four rounds with the flattest trajectory are a mix of two.300 Win Mag and two.338 LM rounds. Here are some of the best riflescopes for 300 win mag: Leupold 113863 VX-I 2-7x33mm Matte Nikon Buckmaster 3-9×40 NightForce SHV 5-20x56mm Redfield 115208 Revenge 3-9x42mm Crossfire II 4-12x50mm One of the best riflescopes there are and that can be fitted perfectly on a 300 win mag, is the Leupold model, Leupold 113863 VX-I 2-7x33mm Matte. While in hunting situations such accuracy is unnecessary, such accuracy does aid in the extending the range of the cartridge. Best Scope for 300 Win Mag: Leupold VX-1 3-9x40mm Compact Waterproof Fogproof Riflescope, Matte Black Our second pick for the best scope for 300 Win Mag is the Leupold VX-1. [4] It is a popular selection for hunting moose, elk, and bighorn sheep as it can deliver better long range performance with better bullet weight than most other .30 caliber cartridges.

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