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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
20 inch barrel
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<blockquote data-quote="J E Custom" data-source="post: 287896" data-attributes="member: 2736"><p>In my opinion Yes.</p><p></p><p>Nothing wrong with the 7 WSM except you will have to have a magnum bolt face and</p><p>they are notorious for feeding problems unless you install a center feed mag box. and</p><p>you will need a muzzle break if the barrel is light.</p><p></p><p>Don't get me wrong I have built many 7 WSMs and I own one myself and did a lot of testing</p><p>on barrel length. starting with a 26" and cutting 1" at a time off found that 23" was the </p><p>minimum without losing to much velocity. Keep in mind that it is the ballistic equal of the</p><p>7mm Rem Mag and needs 70+grs of slow powder to be at 98 to 100% powder density and </p><p>with a short barrel it produces a big muzzle flash.</p><p></p><p>The 260 and the 7/08 works well with less than 50grs of powder and for what you want to </p><p>do the 120 gr bullet will produce 3150 ft/sec with 45 grs of Varget with very mild recoil with </p><p>no brake.also it has a standard bolt face.</p><p></p><p>The 243,260,7/08 and the 308s are trouble free and very accurate and based on what you </p><p>said about expense and difficulty in getting components I based my opinion on that information.</p><p></p><p>There is nothing wrong with other calibers mentioned but for short barrels 18"to 22" the 308 </p><p>based cartridges work very well. And being a NATO round 308 brass should be readily available</p><p>and can be necked down to 7/08 or 260 easy.</p><p></p><p>The choice is yours and the more opinions the better.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 287896, member: 2736"] In my opinion Yes. Nothing wrong with the 7 WSM except you will have to have a magnum bolt face and they are notorious for feeding problems unless you install a center feed mag box. and you will need a muzzle break if the barrel is light. Don't get me wrong I have built many 7 WSMs and I own one myself and did a lot of testing on barrel length. starting with a 26" and cutting 1" at a time off found that 23" was the minimum without losing to much velocity. Keep in mind that it is the ballistic equal of the 7mm Rem Mag and needs 70+grs of slow powder to be at 98 to 100% powder density and with a short barrel it produces a big muzzle flash. The 260 and the 7/08 works well with less than 50grs of powder and for what you want to do the 120 gr bullet will produce 3150 ft/sec with 45 grs of Varget with very mild recoil with no brake.also it has a standard bolt face. The 243,260,7/08 and the 308s are trouble free and very accurate and based on what you said about expense and difficulty in getting components I based my opinion on that information. There is nothing wrong with other calibers mentioned but for short barrels 18"to 22" the 308 based cartridges work very well. And being a NATO round 308 brass should be readily available and can be necked down to 7/08 or 260 easy. The choice is yours and the more opinions the better. J E CUSTOM [/QUOTE]
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20 inch barrel
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