270 Wby Mag 100 Grain; 270 Wby Mag 110 Grain; 270 Wby Mag 130 Grain; 270 Wby Mag 140 Grain; 270 Wby Mag 150 Grain; 270 Wby Mag 160 Grain Rifle was a Weatherby Mark V with a 24 inch barrel. John Barsness has some load data he developed and published in his "Loads That Work" articles and as I recall, spoke highly of Ramshot Magnum. They should not be used in any other rifle without starting at least three grains down and working up. data **includes new A-Tip® Match load data; 338 Lapua Mag 270 gr. ATTENTION: New reloading data … For a traditional black-powder load in the .45-70, try 70 grains of Swiss 11⁄ FTX® (Rifle) 41 Remington Magnum 190 gr. 2 of 3 hits in the 10 ring= bullseye. ELD-X® 41 Remington Magnum 190 gr. My current load is … These loads were maximum for safe, trouble-free hunting loads in the test rifle. Waters' research covers the smallest of calibers to some of the largest. he covers a wide variety of handgun loads and rifle loads. A 1:10 twist is standard for all popular rifles using this bullet diameter, whether .270 Winchester, .270 Weatherby Magnum or .270 Winchester Short Magnum. 700 BDL in .270 caliber. The Sierra's had a much deeper penetration (complete), and had a straighter wound channel and didn't break up like the much lighter constructed ballistic tips. It helps to know the twist of the rifle’s barrel if thinking about using one of these really long bullets. Load Data. “pet” handloads for the .270 WCF, www.handloadermagazine.com 53 John used to use relatively “affordable” Sierra or Hornady bullets to do initial load work-up, knowing they were highly accurate, but these days many premium bullets are just as accurate. My current load for the coming year for the .270 is a max load of Mag-Pro under a Speer 130gr HotCor. 7mm (284 dia) 7-30 Waters 110 7-30 Waters 130 7-30 Waters 145 7mm-08 Remington 110 7mm-08 Remington 130 7mm-08 Remington 145 7mm-08 Remington 160 7mm-08 Remington 175 7mm Mauser 7x57mm 110 7mm Mauser 7x57mm 130 7mm Mauser 7x57mm 145 7mm Mauser 7x57mm 160 270 Weatherby Magnum. Next best was 168 grain E-tips & Magnum powder ~ 1.5 MOA - about the same as I've gotten with 180 grain partitions. I wouldn't hesitate to use the 140gr Sierra's for anything the .270 is suited to. Surprisingly the 200 grain Accubond shot 4+" - 3 shot group with the same load??? 52.8 grains was the accuracy winner. If you are interested in the most recent data for cartridges and/or bullet weights/styles not listed on this page, contact Barnes Consumer Service department to inquire about recommended loads and approximate timing for the data to be made available via email at customerservice@barnesbullets.com or by phone at 800.574.9200.. Imr 4831@ 52.8 grains was the powder work up accuracy winner with 2 hits in the 10 ring out of 3 total bullseye hits in a powder work up! .270 Weatherby Magnum: Warning! My WBY rifle is a Remington 700 300 Weatherby Classic. He lists compatible propellants (powder), primers and bullets for each caliber he covers and indicates the potentially most accurate loads . Obsolete reloading data that has been retired from our Handbook of Cartridge Reloading is available. I'm using 215 primers in my WBY. 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