Consequently, I have inserted a line of demarcation between the Class 1 (animals weighing less than 50 pounds) and Class 2 (animals weighing up to 300 pounds) cartridges based on a minimum KPS of 11.0 at 100 yards. While still unreleased to the public, the cartridge went on to set world records for accuracy including the first ten 10X in 1,000 yards (910 m) benchrest shooting. I can really tell a difference when switching to the .300 Ultra Mag. Their KPS scores tend to confirm this. There is no comparison. We look at the futuristic .450 Bushmaster and how it compares to the tried and true .45-70. The .300 SAUM is why my Remington Model Seven feels like a .308 but hits like a .300 H&H. Among these are that the .22 caliber centerfire rifle cartridges are inadequate for any sort of deer hunting; ditto the .25-20, .30 Carbine and .32-20. Mag. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. AccuBond at 2950 fps. For a fascinating, two part analysis in depth of the G&S Online rifle cartridge killing power formula and its ramifications, see the articles The G&S Online Rifle Cartridge Killing Power Formula: Implications and Applications and Determining The Effective Killing Range of Rifle Cartridges by Gary Zinn. Additionally, itâs an extremely accurate cartridge that may even have a slight edge on the .30-06 in that regard. So what it comes down to to me is .300 Win Mag vs 300 Weatherby. Refine by Caliber: .300 Weatherby Magnum .300 Win. The 6mm PPC wins most benchrest matches today simply because it is the cartridge most benchrest shooters shoot. It has the accuracy of the 6.5 Creedmoor and the power of the 300 Win Magâ¦ a nice combination! The following ammunition cartridge ballistics information and chart can be used to approximately compare .300 Weatherby Magnum vs .300 Winchester Magnum ammo rounds. You will also get the same response from professional hunters in Africa who have long been, and probably always will be, extremely fond of the .375 H&H Magnum as well as another belted number called the .458 Winchester Magnum. Just because it can be done does not mean it makes sense, despite what you might read in advertising copy. Magnum. My trusty calculator tells me that it takes a pound more powder to load 2,300 rounds of .300 H&H. It also tends to confirm some long held beliefs. Perhaps it is time we sift through the rumors and seek out a fact or two. I know of at least one record set decades ago by a competitor using a rifle in .222 Rem. I did shoot the 140 soft point as much cheaper shell at $49 per box, tried 3 rounds of the 140 Berger, inch low & leftâ¦..so select which bullet suits you best & stay with it. Magnum Shotshells - Do We Really Need Them? Match. We have also been given several reasons why one of the new breed of super-short magnum .30 cartridges is the thing to have, while long, slim .30 magnums are out of style. ISS Prop House gives us the rundown on the guns used in Enemy at the Gate. And when it comes to delivering a deadly blow to a target standing way out yonder, case capacity wins out over case efficiency every time. As you can see, when the maximum loads of five .300 magnum cartridges listed in six reloading manuals were compared, the .300 WSM produced an average of 45 fps in velocity for each grain of powder used. Whether or not the slightly better efficiency of the .300 WSM is worth more than a hill of beans depends on how many rounds are loaded each year. Magnum and would not whimper a bit if the rifle I carry is chambered for one of the .416s from Remington, Weatherby, or Rigby. Being short and fat, it offers a squat powder column. At the benchrest, I find the .300 H&H and .300 WSM a tad more comfortable to shoot, and while the .300 Win. The short and fat .300 magnums are no better than other magnums of the same caliber, but the author likes them because by working in a short action, they help trim ounces from lightweight rifles like the Browning A-Bolt Mountain Ti in .300 WSM (top) and the Remington Mode. Even so, I do not consider any .300 magnum to be the ultimate brown bear cartridge. Stuff the.300 with about 73 grains of IMR 4831 powder, and it should kick that bullet out at 3,150 fps. Hunting rifles, even those capable of half-MOA accuracy would never know which cartridge they are chambered for. and .300 Weatherby do kick a bit more, those two feel about the same to my shoulder. Instead, most who shoot a magnum cartridge continue to stick with the .300 Win. Recoil: Recoil is far less in a 308 than a 300 win mag. Remington specifically states that their Managed Recoil .30-30 load is a 100 yard deer cartridge. Here is the G&S Online Killing Power Formula used to compile this list: Energy at 100 yards (in foot pounds) x Sectional Density (taken from reloading manuals) x cross-sectional Area (in square inches) = Killing Power Score at 100 yards. The .300 Weatherby Magnum is a fast, hard-hitting cartridge, driving a 180-grain bullet to a muzzle velocity of 3250 fps, for over 4,000 ft.-lbs. Mag. Both died very quickly. David Fortier talks with Jeff Hoffman of Black Hills Ammunition about the evolution of the .308 Win. Introduced in 1944, this is the all-around cartridge for the big game hunter. 73 grains of IMR 4831 powder, and the round is still consider one of the.308 but! For extreme accuracy, but nothing could be further from the truth its British.! Do not consider any.300 Magnum you choose is far less in a 308 than a 300 Win and... 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