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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ideal balance point for rifle ( 6.5 WSM loads??)
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<blockquote data-quote="grkldoc" data-source="post: 22412" data-attributes="member: 407"><p>Just built a rifle for my father in 6.5 WSM and did velocity/pressure testing (peak strain meter) to start him off with some loading data. </p><p>Materials:</p><p>M700 long action</p><p>HSprecision sporter stock</p><p>Douglas XX air gauged 26.5" barrel #5 taper 1 in 8" twist</p><p>fireformed case capacity 80.5gr H2O</p><p></p><p>Essentially it is the 264 win mag. You can look in a reloading book (Nosler) match the maximum velocities and come up with a maximum pressure. I don't see any velocity advantage. Accuracy has been good with some one hole groups at 100 yds(95gr Hornady VMAX,~3600fps, ~60000psi). Cases tend to stick more easily than standard cartridges even at reasonable pressures. Usually occurs after three firings. We think this is due to minimal case taper and the larger diameter case placed in a classic M700 construct and shot at the 65000psi maximum. We have been forced to full length size cases on a more regular basis. Perhaps a larger diameter barrel shank in a custom action could help with this problem. Or we may have to accept a lower maximum pressure. We are still in the early testing stages.</p><p></p><p>[ 05-29-2002: Message edited by: grkldoc ]</p></blockquote><p></p>
[QUOTE="grkldoc, post: 22412, member: 407"] Just built a rifle for my father in 6.5 WSM and did velocity/pressure testing (peak strain meter) to start him off with some loading data. Materials: M700 long action HSprecision sporter stock Douglas XX air gauged 26.5" barrel #5 taper 1 in 8" twist fireformed case capacity 80.5gr H2O Essentially it is the 264 win mag. You can look in a reloading book (Nosler) match the maximum velocities and come up with a maximum pressure. I don't see any velocity advantage. Accuracy has been good with some one hole groups at 100 yds(95gr Hornady VMAX,~3600fps, ~60000psi). Cases tend to stick more easily than standard cartridges even at reasonable pressures. Usually occurs after three firings. We think this is due to minimal case taper and the larger diameter case placed in a classic M700 construct and shot at the 65000psi maximum. We have been forced to full length size cases on a more regular basis. Perhaps a larger diameter barrel shank in a custom action could help with this problem. Or we may have to accept a lower maximum pressure. We are still in the early testing stages. [ 05-29-2002: Message edited by: grkldoc ] [/QUOTE]
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Ideal balance point for rifle ( 6.5 WSM loads??)
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