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Long Range Hunting & Shooting
Talk me out of a 300 rum
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<blockquote data-quote="J E Custom" data-source="post: 1947685" data-attributes="member: 2736"><p>The 378 Weatherby and the RUM cases are my favorite cases/cartridges to wild cat. Both exceed expectations when wildcatted. so the possibilities are almost unlimited with ether of these cartridges. </p><p></p><p>The 1 in 9, 1 in 9.5 or 1 in 10 twist will work well in these cartridges in 30 caliber. It is easy to AI the Weatherbys to remove the radius and replace with a 40 o shoulder and still fire Weatherby ammo to fire form to the new AI version and the benefits are many.</p><p></p><p>If I were to build a 338/378 this is what I would do because of the advantages of being less finicky to different loads. The 30/378 does not seem to suffer from this phenomenon. and is easier to load for.</p><p></p><p>The 378 case can be opened up to nearly 145 grain powder capacity, so bullet size is not an issue.</p><p></p><p>Search for member Doublezranch to get some good information on these cartridges performance.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1947685, member: 2736"] The 378 Weatherby and the RUM cases are my favorite cases/cartridges to wild cat. Both exceed expectations when wildcatted. so the possibilities are almost unlimited with ether of these cartridges. The 1 in 9, 1 in 9.5 or 1 in 10 twist will work well in these cartridges in 30 caliber. It is easy to AI the Weatherbys to remove the radius and replace with a 40 o shoulder and still fire Weatherby ammo to fire form to the new AI version and the benefits are many. If I were to build a 338/378 this is what I would do because of the advantages of being less finicky to different loads. The 30/378 does not seem to suffer from this phenomenon. and is easier to load for. The 378 case can be opened up to nearly 145 grain powder capacity, so bullet size is not an issue. Search for member Doublezranch to get some good information on these cartridges performance. J E CUSTOM [/QUOTE]
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Talk me out of a 300 rum
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