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.338 WinMag
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<blockquote data-quote="Mike Matteson" data-source="post: 1950652" data-attributes="member: 101791"><p>I using 200 gr Accubond Noslers, with Winchester 760 powder, Fed 210. in a Winchester case. The powder load is over 70 gr. The primers are flatten, but not creator. You will need to work up from there. There isn't any reloading data on 760 powder in most of the manual I have looked at for 338 W. Mag. I would chronograph as you shoot the rounds to see what you are achieving. I have two rifles that came up with the same thing on max load.</p><p> Several years back I was loading for a 308 Norma Mag. Using a 300 win. Mag neck sizing die. the necks on a 300 win is short than the 308 N Mag. I was turning all my necks on my cases, after first firing. Then sizing the case after that with 300 W. Mag neck sizing die. It only size about half the case neck leaving the balance at chamber size fire formed. It didn't hurt my accuracies and felt like it improved it. I was already at about .75" at 100 yards. Back then I would up loads at .1 of a gr. more than what the manuals called out for. Loaded 5 rounds per powder load weight to shot. It took one hell of a lot of time to get to 75.5 gr. in that load. You can move up about .1/2 a grs. per round, on a 70 gr case. </p><p>Stay save.</p><p>SSS</p><p>Mike</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 1950652, member: 101791"] I using 200 gr Accubond Noslers, with Winchester 760 powder, Fed 210. in a Winchester case. The powder load is over 70 gr. The primers are flatten, but not creator. You will need to work up from there. There isn't any reloading data on 760 powder in most of the manual I have looked at for 338 W. Mag. I would chronograph as you shoot the rounds to see what you are achieving. I have two rifles that came up with the same thing on max load. Several years back I was loading for a 308 Norma Mag. Using a 300 win. Mag neck sizing die. the necks on a 300 win is short than the 308 N Mag. I was turning all my necks on my cases, after first firing. Then sizing the case after that with 300 W. Mag neck sizing die. It only size about half the case neck leaving the balance at chamber size fire formed. It didn't hurt my accuracies and felt like it improved it. I was already at about .75" at 100 yards. Back then I would up loads at .1 of a gr. more than what the manuals called out for. Loaded 5 rounds per powder load weight to shot. It took one hell of a lot of time to get to 75.5 gr. in that load. You can move up about .1/2 a grs. per round, on a 70 gr case. Stay save. SSS Mike [/QUOTE]
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