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As a young wildcatter, he revolutionized the industry with his fast, hard-hitting loads that were dead-on accurate. As he puts it, there just isn't a better long-range deer caliber. The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. I have just read an online article which said that the .270 Weatherby Magnum ammo with the 130 grain bullet with a muzzle velocity of from 3275 to 3375 feet per second "is not a particularly good performer on medium game at close ranges due to bullet blow up." Mag. To put this into perspective, a Boeing 737 commercial airliner travels at a cruising speed of 600 mph, or 880 fps. Mag. The velocity gain over the .375 H&H Magnum works out to be about 240 ft/s (73 m/s) and an increase in maximum point blank range of about 25 yd (23 m) with bullets of equal weight. The 2.70 Weatherby Mag. Being a proprietary cartridge, the .270 Weatherby has no official SAAMI maximum pressure limit. another vote for 7828 in 270 WBY... it was most accurate with 130 SST and 130 IB in my gun w/velocity at 3475 @ 15 ft chrono; actually it was even more accurate when I went faster but the load was too hot for all around use when the temps increase in summer so I settled on 75.5 gr and the Fed 215M. $15 UPS ship fee. 270 Weatherby Magnum Handload Data. The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby.It has the characteristic double-radius shoulders and is necked down to accommodate the .277in bullets. Ultra-high velocity, magnum ammunition is how Roy Weatherby got started in the 1940s. Great for long distance shooting. 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 inventions such as the .270WSM. has a good following with hunters and can be used on medium to large game, but it is most suited on game up to the size of an Elk. Hier Weatherby Ultra High Velocity .270 Wby Mag Nosler Partition 150 grs Büchsenpatronen kaufen! 1458 1459 1465 Propellant Case Primer Weight (grains) Muzzle Velocity (feet/sec) Weight (grains) Alliant Reloder 26 Federal Federal 215 62.8 2951 69.6 20 rds per box of 130 grain soft point ultra high velocity Boxes are excellent and cartridges are like they left the factory EX+++++. Roy Weatherby liked to design cartridges with more zip than other commercial rounds. Gunpowder Charge Weight Velocity m/s Velocity fps; Norma 203-B: Max 85.2 Min 81.0: 883 846: 2897 2776 Roy Weatherby introduced his first big-game cartridge, the .270 Weatherby Magnum, in 1943 and began offering handloaded ammunition in 1945. WEATHERBY CARTRIDGES. Find your best price for 270 Wby Mag Ammo | Best 270 Wby Mag Ammunition - AmmoSeek.com Search Engine 2020 28 Nosler Ammo. 270 Weatherby Magnum Rifle Cartridge. Mag. Like most Weatherby cartridges, the .270 Weatherby was standardized by the Small Arms and Ammunitions Manufacturers Institute in 1994, and it has a SAAMI maximum pressure limit of 62,500 psi. He goes on to mention that it is also quite effective for elk, and pronghorn. by 300 fps. by ©RGI Media, Inc - Published with permission. In addition, magnum cartridges, such as the popular .270, 7mm and .300 numbers, lose so much velocity in a 22 inch barrel that they show little ballistic advantage over standard calibers like the .270 Win., .280 Rem. Shop online for top quality .300 Weatherby Magnum Centerfire Rifle Ammo for sale! “The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. To put this into perspective, a Boeing 737 commercial airliner travels at a cruising speed of 600 mph, or 880 fps. Arms24: Der Online Shop für Jagd Sportschiessen Wiederladen The .240 Weatherby Magnum was developed in 1968 by Roy Weatherby.In the development of his own .240in/6 mm cartridge, Weatherby was significantly influenced by both the success and the limitations of the .244 H&H Magnum cartridge devised in England by his friend and colleague David Lloyd.It was the last cartridge to be designed by Roy Weatherby. The .270 Win has a relatively flat trajectory itself, but the 270 WSM had a small, but definite advantage in this area. 270 Win Short Mag Ammo. The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. $15 UPS ship fee. Based on the 300 H&H Magnum, the 300 Weatherby delivers 300 more fps than its British cousin. The .240 Weatherby Magnum is the fastest 6mm on the commercial market, exceeding the muzzle velocity of the .243 Win. This performance comes at the cost of more recoil and barrel heat. *Some of the early German-made Weatherby rifles had 1:12” twist barrels, which will stabilize only 110-grain TSX bullets..270 Weatherby Magnum Minimum Maximum g g g Bullet Style: TSX FB Primer: Fed 215 B.C. Be thoroughly familiar with those instructions before using these loads. [4], For those handloading their own cartridges, this is an easy round to load. Hand loads and more especially the Hornady Light Magnum loads for the .270 Winchester can come close to .270 WSM velocities however, the WSM is able to achieve its goal velocities with relative ease. 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