There is no comparison between the two except to say that they are both .30 caliber. Just because it can be done does not mean it makes sense, despite what you might read in advertising copy. It hurts a bit to write this particular comparison, because I’m really partial to the .300 WBY. It’s got class, panache, and performance in spades, and is actually the oldest veteran in this group. The .300 Weatherby is not renowned for extreme accuracy, but Boddington has found it plenty accurate enough. Under those conditions, one shot at a bruin is all you will likely get, and it had better be a good one. The FactsThe belted case was a British idea that originated with the .400/375 Belted Nitro Express in 1905, and it was later used in the development of the .375 H&H and .300 H&H Magnums. Under perfect conditions and with perfect bullet placement these cartridges will kill deer, of course. I've shot all manner of factory loads and hand loads and it will not shoot less than 2MOA. Left to Right: .300 H&H Magnum, .30 Newton, .300. Stuff the.300 with about 73 grains of IMR 4831 powder, and it should kick that bullet out at 3,150 fps. Like most of his other magnum cartridges, this is based on a blown-out .300 H&H Magnum case, using the signature Weatherby double-radius shoulder. While the 257 weatherby mag is perfectly capable of killing elk I would consider it to be way down the list of fine elk rounds. I have no experience with the Bergara, but do with Weatherby Vanguard. Remington specifically states that their Managed Recoil .30-30 load is a 100 yard deer cartridge. You can always load down the 300 mag to 308 levels of performance, on deer, but you dont need to do so, given the 25% reductionof recoil by the gas op BAR. Mag. 100 yards was chosen as a reasonable distance at which to compare rifle cartridges and loads, since most big game is killed within or around that distance. I can really tell a difference when switching to the .300 Ultra Mag. That alone makes super-stubby magnums worthwhile. that has yet to be beaten by the 6mm PPC. Both died very quickly. 308 and 300 Win Mag are both great for taking big game in North America. 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. and .300 Weatherby do kick a bit more, those two feel about the same to my shoulder. LIST OF CARTRIDGES AND LOADS (bullet weight and MV - 100 yard KPS): .32-20 Winchester (100 grain at MV 1210 fps) - 2.6, .327 Federal Magnum (Rifle) (100 grain at MV 2000 fps) - 6.2, .223 Remington (64 grain at MV 3020 fps) - 7.2, .30 Carbine (110 grain at MV 1990 fps) - 7.4, .22-250 Remington (55 grain at MV 3680 fps) - 8.0, .220 Swift (55 grain at MV 3680 fps) - 8.0, .223 Remington (68 grain at MV 2960 fps) - 8.4, .223 Remington (75 grain at MV 2790 fps) - 9.2, .357 Magnum (Rifle) (180 grain at MV 1550 fps) - 9.5, .22-250 Remington (64 grain at MV 3500 fps) - 9.7, .223 WSSM (64 grain at MV 3600 fps) - 10.1, .220 Swift (64 grain at MV 3600 fps) - 10.1, .44-40 Winchester (200 grain at MV 1190 fps) - 10.1, .44-40 Winchester (200 grain at MV 1310 fps) - 11.0, .25-35 Winchester (117 grain at MV 2230 fps) - 11.9, .357 Magnum (Rifle) (158 grain at MV 1830 fps) - 12.7, .30-30 Winchester (Light) (125 grain at MV 2175 fps) - 12.9, .25-35 Winchester (110 grain at MV 2425 fps) - 14.4, .300 Blackout (125 grain at MV 2175 fps) - 14.5, .300 Blackout (135 grain at MV 2085 fps) - 14.9, .250 Savage (100 grain at MV 2820 fps) - 15.1, 7.62x39 Soviet (123 grain at MV 2365 fps) - 15.7, .257 Roberts +P (117 grain at MV 2650 fps) - 17.9, 6.8mm Rem. 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. Instead, most who shoot a magnum cartridge continue to stick with the .300 Win. I am saying all this to say that whether or not a cartridge has a belt on its case is of no importance. Hornady .300 PRC (left) and .300 WBY.300 Weatherby Magnum vs. Hornady .300 PRC. Switching to a heavy for caliber (high sectional density) bullet generally, but not always, increases the killing power score. I have been using rifles chambered for belted cartridges since the 1960s, and not once have I discovered anything to complain about. holds about 48.6 grains of water. The latest breed of .30-caliber magnums with no belts in both full-length and abbreviated form has prompted a lot of dancing in the streets, and a number of claims have been made about them. Though both cartridges utilize .308″ bullets, the .300 Win Mag is also better suited for using heavier bullets in the 200-220 grain range than the .30-06. Mag. The .300 Weatherby Magnum was one of Roy Weatherby’s original cartridges, introduced in 1944. Note: A more comprehensive rifle cartridge killing power comparison list with more calibers and loads can be found on the Member Side Tables, Charts and Lists page. On more than one occasion I have stalked along streams meandering through thick woods and alder thickets, and their banks were littered with the fresh carcasses of salmon partially eaten by bears. Magnum-size cartridges, such as those developed during the early part of the 20th century by Charles Newton, were exceptions, but other magnums that came along after the 1920s had belts on their cases. 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. 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. One argument in favor of the super-stubbies is their greater efficiency. I have never been faced with the unpleasant task of going into the thick stuff to finish off a wounded bear, but if it ever happens, I would want to be shooting a heavier bullet of larger caliber. Round off to one decimal place for convenience. If someone eventually proves me wrong and a .30-caliber magnum on a short, stubby case actually is slightly more accurate than one on a long, slim case, the difference will be so slight that only benchrest rifles will be able to prove it on paper. As illustrated in the recoil comparison chart, there is very little difference in recoil between the .300 H&H Magnum, .300 WSM, and .300 Win. Mag., but it starts to increase as we move up to the faster .300 Weatherby Magnum. Match. It is into this market that Weatherby unleashed the world’s fastest production 6.5 mm cartridge—the 6.5-300 Wby. The G&S Online Rifle Cartridge Killing Power Formula and List, The G&S Online Rifle Cartridge Killing Power Formula: Implications and Applications, Determining The Effective Killing Range of Rifle Cartridges. Mag. Any of the .300 magnums is an excellent choice for all North American game. To avoid a Ford vs Chevy debate, let’s stipulate that the rifle I have selected is available in both chamberings. AccuBond at 2950 fps. Being short and fat, it offers a squat powder column. But when it all comes together, an accurate rifle chambered in .300 Weatherby Magnum, suitable projectiles and optimum technique, well that’s something. Refine by Caliber: .300 Weatherby Magnum .300 Win. Introduced in 1944, this is the all-around cartridge for the big game hunter. The Winchester .350 Legend is a no-nonsense whitetail thumper tailored for rifle hunters in... A half-century in the making, the new DGX Bonded is Hornady's best-ever dangerous-game bullet. Additionally, it’s an extremely accurate cartridge that may even have a slight edge on the .30-06 in that regard. Here's an objective look at the vaunted .30-caliber magnums. Looking at it another way, when the three cartridges are loaded to maximum velocities with 180-grain bullets, the .300 WSM burns an average of 3 grains less powder than the .300 H&H and 5 grains less than the .300 Win. The rifle will be a JP Sauer, Weatherby, or Sako. Using a short action sheds ounces from a rifle, and that's important when climbing a mountain steep enough to make you think each ounce you are carrying seems to weigh at least a pound. Using the .300 Wby. The .308 Winchester and the PPC line of cartridges have been praised for their geometry, and the .300 WSM follows in that trend. 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. 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. Fourth Place: .300 Weatherby Magnum, 65.0 Points. This video supplies more detailed information which I have gathered on the 300 Weatherby 165 gr ammo performance than in any of my prior videos. I have one in 300 Win Mag that I can't get to shoot consistently. Thanks for the great side-by-side comparison, David. As magnum cartridges of .30 caliber go, .300 Weatherby performance is awfully hard to beat, and cartridges such as the .300 Remington Ultra Mag and .30-378 Weatherby Magnum are a bit more of the same. As can be seen in the maximum velocity comparison chart, the 85-year-old .300 H&H Magnum sends a 180-grain bullet on its way about as fast as the .300 WSM, and the .300 Win. On the other hand, when shooting game in the field, I am never conscious of a rifle's kick, and for that reason all .300 magnum cartridges feel the same. 200 gr. Jeff-I did a lot of testing and load development with .300 Weatherby. Please consider publishing a comparison of the 6.5–300 WBY with the 300 Win Mag. So will the lowly .22 LR rimfire cartridge. Best Rimfire Cartridges — .22 Magnum vs .22 Long Rifle, .375 Ruger & .416 Ruger — Big Bore Cartridges, Black Hills Evolution of Rifle Cartridge: .308 Win. I actually prefer the .375 H&H. It holds about 82 grains of water when accommodating a 180-grain bullet. Effective, efficient, and affordable, the .375 Ruger and .416 Ruger are two of the best... Give a Gift   All Rights Reserved. Moving to heavier game, I have taken a very large pile of elk and moose with a number of cartridges ranging in calibers from .270 to .416, and I'll just be darned if I can see that anything kills either any deader or more quickly than a .300 magnum loaded with the right bullet. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. The .308 Winchester performs best with bullets from 150 gr up to 168 gr. Refine by Caliber: .300 Win. Magnum cartridges than for the same number of .300 WSM cartridges. There is some overlap in the common bullet weights they use, but the 300 PRC … Another long held belief of mine is the .30-30/150 grain load is a more powerful 100 yard cartridge than the .243 Win./100 grain load. I think they are a wonderful idea, and I believe there is plenty of room in the hunting scheme of things for each and every one of them. It was for this reason that I purchased the Weatherby Mark V 6.5-300. Tracks were so fresh I could have sworn they were still smoking. Mag. The above list is only approximate, as a great variety of loads are possible for any centerfire rifle cartridge and no method of estimating killing power is infallible. Copyright 2017 by Chuck Hawks. I had it examined by my gunsmith and he couldn't get it … The .300 WSM is why my Browning A-Bolt Mountain Ti weighs the same as a rifle in .308 Winchester but equals the .300 Win. Granted, I can only get 3-4 loading per round of brass from this load but I am hard pressed to find loadings of .300 RUM that greatly exceed this performance. Magnum .300 Win. A KPS of 30 corresponds well with a Hornady HITS score over 901, which the experts at Hornady consider the minimum for use on large game. Then came a new breed of magnum cartridges without a belt, and suddenly that little band of brass just forward of the extraction groove of a case had more critics than Michael Moore at a soap-makers convention. Note: Reduced recoil factory loads are marked "Light.". Most orders ship within 24 hours (excludes firearms). Having spent the time and effort to devise a rifle cartridge killing power formula that has a positive correlation with actual results in the field, it seemed appropriate to use that formula to compare the killing power of various hunting rifle cartridges and loads. The 300 win mag with 165 gr - 200 gr to me is clearly a better all around big game round. ©2020 Outdoor Sportsman Group. When it comes to magnum cartridges of .30 caliber, there seems to be no middle ground among hunters. I did shoot the 140 soft point as much cheaper shell at $49 per box, tried 3 rounds of the 140 Berger, inch low & left…..so select which bullet suits you best & stay with it. Was shooting Weatherby 257 Magnum, purchased First Lite in 6.5 300, bore sighted, straight out of box first 3 shots 1 inch high with grouping touching each other. As for the few animals in North America that may decide to shoot back, I have taken two Alaska brown bear, one with the .300 Remington Ultra Mag, the other with the .358 Shooting Times Alaskan. Based on the 300 H&H Magnum, the 300 Weatherby delivers 300 more fps than its British cousin. For the .300 Win. Short Magnum .30-30 WCF ... 308 Norma Mag 338 Norma Magnum. The author has taken a lot of big game, including Alaska brown bear, with the Remington Model 700 in .300 Ultra Mag, and he likes both the rifle and the cartridge. David Fortier talks with Jeff Hoffman of Black Hills Ammunition about the evolution of the .308 Win. (For more information, see The G&S Online Rifle Cartridge Killing Power Formula and List.). Refine by Caliber: .300 Win. Long experience has shown the .44-40 200 grain/1310 fps MV load (KPS 11.0) and traditional .25-35 117 grain/2230 fps MV load (KPS 11.9) are adequate 100 yard deer cartridges, provided the hunter drives the bullet directly into the vitals. When first introduced in 1944, this cartridge developed a reputation for “excessive” recoil and unpredictable results on game. Do recoil energy figures on paper accurately equate to actually shooting those cartridges? Mag. Short Magnum. However, the Remington Managed Recoil .30-30 125 grain/2175 fps MV (100 yard KPS 12.9) and .357 Magnum (Rifle) 158 grain/1830 fps MV (100 yard KPS 12.7) loads are probably better guides to the minimum practical killing power for Class 2 game with more modern cartridges. 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