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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 wsm or 7 LRM
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<blockquote data-quote="MontanaRifleman" data-source="post: 876862" data-attributes="member: 11717"><p>I will add that I also have a 300 RUM and 300 WSM as well as a 7 RM which has more capacity than the 7 WSM. With H4350 I got about 3000 fps with a 180 bullet in my 24" 300 WSM, With IMR 4831, I got about 3000 fps with a 160 bullet in my 24" 7 RM. Same velocity, smaller bullet. Wtih higher performance powders like Retumbo and RL17 I was able to get about 3100 and 3150 with the 160's in the 7. With RL17 in the 300 WSM I was able to get 3200 fps plus with the 180's.</p><p></p><p>The larger cal allows a greater flow of escaping gasses through the bore which will in turn push a bullet of the same weight faster.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 876862, member: 11717"] I will add that I also have a 300 RUM and 300 WSM as well as a 7 RM which has more capacity than the 7 WSM. With H4350 I got about 3000 fps with a 180 bullet in my 24" 300 WSM, With IMR 4831, I got about 3000 fps with a 160 bullet in my 24" 7 RM. Same velocity, smaller bullet. Wtih higher performance powders like Retumbo and RL17 I was able to get about 3100 and 3150 with the 160's in the 7. With RL17 in the 300 WSM I was able to get 3200 fps plus with the 180's. The larger cal allows a greater flow of escaping gasses through the bore which will in turn push a bullet of the same weight faster. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 wsm or 7 LRM
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