Unless a faster twist barrel is spun on and the heavier (120+) pills, like the Wildcats, are used. I was wondering why you would choose the 300 wby over the 300 win mag until I saw that it's energy and velocity was some what higher. The following ammunition cartridge ballistics information and chart can be used to approximately compare .300 Weatherby Magnum vs .300 Winchester Magnum ammo rounds. It is based off the parent case of the belted .300 H&H Magnum by narrowing the neck to accept the .277 inch (7mm) bullet. Believe me, that bullet will equal the performance of any 160 or 175gn 7mm bullet I've ever tried. Mag. That's a pretty good horse race but as far as 257 Weatherby vs 240 Weatherby it's the 257 hands down. As with most of the Weatherby line of cartridges, the .270 gained a small but staunch following which has remained static to this day, regardless of new … Mag., remains among the best long-range cartridges to date. Never had to fire a second shot while hunting with either one. .25-06 Remington vs .257 Weatherby Mag: Which is the Best Hunting Cartridge? Have fun In my opinion, one of the drawbacks of all three of the .270s is their twist rate. The cartridge is short enough to function in standard-length long actions with a brass length of 2.549" or 64.74mm and an overall length of about 3.295". The 6.5 PRC is pretty much a rebirth of the 6.5x284 which also another great cartridge. The superior ballistic coefficient of the 6.5 Creedmoor does help give it a slight edge over the two other cartridges in terms of wind drift, but not a gigantic one: the .25-06 Remington only drifts 2″ more and the .270 Winchester only has a minuscule .5″ more wind drift at 500 yards. The Ruger only comes in a 24" tube, so there really isn't much difference between that and a regular .270 Win. I'm using 120 gr Nosler BTs in my 6.5x55, but obviously a different application. That's why I have one of each Ha! Tex68w. One place where the 270 Magnum is better is with some heavy bullets that can be a bit hard but they work on the light game. BUY NOW The ballistic performance based off four grains for velocity is 3,528 ft/s (110 gr), 3,338 ft/s (130 gr), 3,242 ft/s (140 gr), and 3,161 ft/s (150 gr). In the WSM .270 fans found a short, powerful, efficient round that could be housed in compact, lightweight short-action rifles and which edged closer to 7mm Rem. The .257 lets you shoot heavier bullets faster, although at a higher price if you buy factory cartridges instead of hand loading. The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. The .257 Weatherby Magnum is a .257 caliber (6.35 mm) belted bottlenecked cartridge. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bulle However, this was a year before Remington came out with their .264 Win. Mag in the Hawkeye. And I will say the the 257 weatherby is plenty capable of doing what you want. The Weatherby is best utilized on light to mid weight game weighing bet 20kg (44lb) and 150kg (330lb) as Roy Weatherby intended. The other one was the .257 Weatherby, which as it turned out, was both the choice of Roy Weatherby and his son Ed, for antelope and mule deer-type game. The .270 is one of a family of Weatherby Magnums which share a 2.545” (64.64mm) length case. The .257 Weatherby is certainly not overpowered and has relatively mild recoil for a magnum cartridge. These include the .257, .270 and 7mm Weatherby Magnum cartridges. Mag, I was actually looking for a .264 Win. The .257 Weatherby is a dynamite cartridge in its own right, however. It would be a tough decision for me to have to choose. Mag. It is one of the original standard length magnums developed by shortening the .375 H&H Magnum case to approx. I wouldn't build one as an all around rifle, I have plenty of other choices for that. As always his stuff is a good read and full of … I shoot 130 gr Sierra Pro-Hunters in my 270 Wby (might be changing soon to something else). Logged JW I like rifles with wood stocks. Looking for previous installments of our "Head to Head" series? ️GEAR STORE: https://www.amazon.com/shop/bullets4bucks6.5 PRC VS 270 WINCHESTERIn this comparison video we compare the 6.5 prc to the 270 winchester. Mag. It has the characteristic double-radius shoulders and is necked down to accommodate the .277 in bullets. Comparing the ballistics of the two side by side the 257 will win every time.I hunt with both and have killed Deer with both. Left to right, .257, .270, .7mm and .300 Weatherby Magnums. Tough decision. To quote Ed, he told me that “the .257 Weatherby was my father’s all-time favorite Weatherby cartridge,” and it became Ed’s as well. 257 Weatherby has more case capacity but will not be quite as friendly as a high volume shooter. Right away, I was in good company. .257 Weatherby Magnum (1944).270 Winchester (or 6.9x64mm) (1925).280 Remington, 7 mm Express 7×64mm Brenneke (1917).308 Winchester (7.62×51mm NATO)(1952).35 Remington, 9x49mm Browning or 9mm Don Gonzalo (8.9x49mm) (1906) .243 is considered too light for large game, therefore, it is out as the best all around caliber. We've got you covered. If you are happy with max 270 Win ballistics any of the 270 mags will give those with reduced loads and no pressure and case life just this side of forever. Using a program to calc point blank range of 3", I get 315 yards for the .257 Weatherby and 265y for the .270 Win using a hot 130g loading. A turbo 270 WIN that shares a 2.545” length case with the 257, 270, and 7mm Weatherby Magnums. 180kg (400lb) is a safe upper limit. The parent case design is based off the .375 H&H Magnum by shortening the neck to fit the .257 inch (6.53mm) bullet. The .257 Weatherby Magnum was designed by Roy Weatherby in 1944 and was first introduced into the market during 1948. ballistics. The ballistic performance based off four grain types for velocity is 3,825 ft/s (87 gr), 3,602 ft/s (100 gr), 3,400 ft/s (117 gr) and 3,305 ft/s (120 gr). Guns and Shooting Online has compiled an extensive table comparing the recoil of many rifle cartridges and bullet weights in rifles of various weights of a load for elk and moose in the .270 Weatherby would be Barnes 150gn MRX BT over a stiff charge of AR2213SC. 2.5 in (64 mm). Mag, and two years before Ruger came out with their .264 Win. Seventy years after Roy Weatherby unveiled his namesake company, his first big-game offering, the .270 Wby. I'm guessing I would shoot something in the 120 gr range in a 6.5-300 Wby. Seventy-six years after the .270 broke cover Winchester launched the .300 WSM, and a year later in 2002 Winchester unveiled the .270 WSM. At 400y the .257 Weatherby has dropped 5.75" and the .270 Winchester has dropped 12.70", over twice as much. The .220 Swift … • .338 Winchester vs. .375 H&H Magnum • .30-30 Winchester vs. .35 Remington There are no flies on a good .25-06 Remington, but when it comes to the blazing quarter-bores, the .257 Weatherby Magnum holds a special place in the hunting fields. Even though it isn't as fast as the .257 Weatherby Mag, the .25-06 Remington cartridge is no slouch. No, you need a belted magnum case, 270 Winchester has a rim .473 in dia with no belt and the Weatherby has a .531 dia rim and a belt which it headspaces on. The .257 Wby. The .270 Weatherby Magnum was designed in 1943 by Roy Weatherby. 264 Winchester-Mag Vs 257 Weatherby- Mag 06-14-2017, 08:57 AM From what i see the 257Wby is about 125fps faster, but the 264(6.5) Win had a greater choice of bullet weights. When I purchased my Mark V .257 Wby. I have shot 100s or pigs and goats and 1000s of roos with both. I am a huge fan of the weatherby magnums. I was doing some recon to see how the ballistics compared on your two choices. All bets are off then. I came across a Chuck Hawks article where he was discussing what to expect when moving up to the medium and heavy hitters. Like the .270 Weatherby Magnum—released 60 years prior to the .270 WSM—it betters the velocity of the .270 Winchester, but I’m not certain that the increased velocity is necessarily required. Here's why. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, b 270 Weatherby Magnum Developed 1943 / Produced 1945 Was one of the first Weatherby Magnums offered to customers. The .300 Weatherby Magnum has a longer case length of 2.825" (71.76mm). The 2.70 Weatherby Mag. Given the same platform advantage, I feel it will holds it's own with cartridges up to 6.5-06, power and ballistics wise. The following ammunition cartridge ballistics information and chart can be used to approximately compare .270 Winchester vs .270 WSM Winchester Short Magnum ammo rounds. However if barrel life or the cost of ammo is a concern then this probably isn't the best choice for you. They all offer up good ballistics. The .243 Remington is not much better. Work up from 64gn toward 67gn which gives 3105 fps. If you rebarrel, doing the 1 in 8" twist to shoot the Blackjack's would put it ahead in trajectory and energy dump. 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