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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 wsm vs 7 rsaum-- that is the ?
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<blockquote data-quote="uncleB" data-source="post: 154652" data-attributes="member: 4679"><p>[ QUOTE ]</p><p>I don't think the slight increase in throat length is responsible for the 150fps gain there... heck, going from standard to AI gets you about 150fps. Furthermore, the VLDs are usually seated into the lands, or very close to them... so the only advantage is not having as much bullet in the case. You think that .25" less bullet can increase case capacity enough to get 150fps... I think not. Increased pressure, twist rate, moly, fast barrel, barrel length, good load... a lot of things could contribute to the extra buck-fifty... but to attribute it to the slightly longer throat would be a real falacy. ~JT </p><p></p><p>[/ QUOTE ]</p><p></p><p>.25AOD,</p><p>I dont mean to flame you on your two posts, but you could not be more wrong if you went out of your way to try.</p><p>The longer throat is exactly what gives this round its added velocity.</p><p>In my opinion the problem with WSM and SAUM is that the SAAMI spec O.A.L. is very short so your bullet is taking up a great deal of powder capacity, with the chambering that fiftydriver did for me the bullet is not taking up any powder capacity because it is in only the neck. the SAAMI spec O.A.L for a 7WSM is 2.860" the O.A.L. for my chambering is 3.230 making a difference of .370" if you add in bullet diameter of .284" ,that is a lot of powder capacity. I will let some mathematical genius figure out how much.</p><p>UB</p></blockquote><p></p>
[QUOTE="uncleB, post: 154652, member: 4679"] [ QUOTE ] I don't think the slight increase in throat length is responsible for the 150fps gain there... heck, going from standard to AI gets you about 150fps. Furthermore, the VLDs are usually seated into the lands, or very close to them... so the only advantage is not having as much bullet in the case. You think that .25" less bullet can increase case capacity enough to get 150fps... I think not. Increased pressure, twist rate, moly, fast barrel, barrel length, good load... a lot of things could contribute to the extra buck-fifty... but to attribute it to the slightly longer throat would be a real falacy. ~JT [/ QUOTE ] .25AOD, I dont mean to flame you on your two posts, but you could not be more wrong if you went out of your way to try. The longer throat is exactly what gives this round its added velocity. In my opinion the problem with WSM and SAUM is that the SAAMI spec O.A.L. is very short so your bullet is taking up a great deal of powder capacity, with the chambering that fiftydriver did for me the bullet is not taking up any powder capacity because it is in only the neck. the SAAMI spec O.A.L for a 7WSM is 2.860" the O.A.L. for my chambering is 3.230 making a difference of .370" if you add in bullet diameter of .284" ,that is a lot of powder capacity. I will let some mathematical genius figure out how much. UB [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7 wsm vs 7 rsaum-- that is the ?
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