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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 mm SHERMAN SHORTMAG vs 7 SAUM
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<blockquote data-quote="elkaholic" data-source="post: 1250782" data-attributes="member: 13833"><p>It has a conventional throat. The case is more efficient with the very short burning column, straight wall design and 40 degree shoulder. Also, because of the distance from the shoulder/neck jct. being much shorter than a SAUM, it allows for a much longer throat so that the useable case capacity is not taken up by the bullet. The case design also does allow for the pressure to be distributed a little better without stretching as easily. I wil say that SOME of the velocities listed probably did have some pretty excessive oressure, but it will outrun a SAUM with equal pressures .........Rich</p><p>p.s. If you long throated a SAUM, you could get closer to the SS velocity but that defeats the whole purpose of having a short action. You would have to run it in a long action to gain the benefit, which some people do.</p></blockquote><p></p>
[QUOTE="elkaholic, post: 1250782, member: 13833"] It has a conventional throat. The case is more efficient with the very short burning column, straight wall design and 40 degree shoulder. Also, because of the distance from the shoulder/neck jct. being much shorter than a SAUM, it allows for a much longer throat so that the useable case capacity is not taken up by the bullet. The case design also does allow for the pressure to be distributed a little better without stretching as easily. I wil say that SOME of the velocities listed probably did have some pretty excessive oressure, but it will outrun a SAUM with equal pressures .........Rich p.s. If you long throated a SAUM, you could get closer to the SS velocity but that defeats the whole purpose of having a short action. You would have to run it in a long action to gain the benefit, which some people do. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7 mm SHERMAN SHORTMAG vs 7 SAUM
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