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<blockquote data-quote="Darryl Cassel" data-source="post: 1616" data-attributes="member: 34"><p>Jack</p><p></p><p>The 338 RUM is a fine cartridge especially when you rebarrel to a longer length.</p><p></p><p>When you improve to the Tomahawk you gain 8 to 9 more grains of powder capacity which is worth going to the improved case if you plan on a longer barrel also.</p><p></p><p>I have a friend who just put together a 338 Tomahawk on a Remington Mag action and a 34" barrel and he uses the 250 Gr Sierra MK bullet. His results are right there with the 338/378 he and I both have.</p><p></p><p>I would be a bit hesitant to shoot the 300 gr with full loads of say 108 to 110 grs of powder on the Remington but, I'm sure some are. My question to them is, do they have a long barrel on that rifle? Pressure seems to build in the longer barrels.</p><p></p><p>I know for a fact the 250 gr does well in the 338 Tomahawk with longer barrels. If you already have a 338 RUM the next step is the Tomahawk when you rebarrel. You could go to the "300" Tomahawk and shoot the 240 Gr Sierra MK with a BC of .711 which ballistically outperforms the 250 gr 338 bullet (.587 BC) all the way. The fellows shooting the 250 gr 338 don't like to hear this but, it's true.</p><p></p><p>Darryl Cassel</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 1616, member: 34"] Jack The 338 RUM is a fine cartridge especially when you rebarrel to a longer length. When you improve to the Tomahawk you gain 8 to 9 more grains of powder capacity which is worth going to the improved case if you plan on a longer barrel also. I have a friend who just put together a 338 Tomahawk on a Remington Mag action and a 34" barrel and he uses the 250 Gr Sierra MK bullet. His results are right there with the 338/378 he and I both have. I would be a bit hesitant to shoot the 300 gr with full loads of say 108 to 110 grs of powder on the Remington but, I'm sure some are. My question to them is, do they have a long barrel on that rifle? Pressure seems to build in the longer barrels. I know for a fact the 250 gr does well in the 338 Tomahawk with longer barrels. If you already have a 338 RUM the next step is the Tomahawk when you rebarrel. You could go to the "300" Tomahawk and shoot the 240 Gr Sierra MK with a BC of .711 which ballistically outperforms the 250 gr 338 bullet (.587 BC) all the way. The fellows shooting the 250 gr 338 don't like to hear this but, it's true. Darryl Cassel [/QUOTE]
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