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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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<blockquote data-quote="jmden" data-source="post: 33828" data-attributes="member: 1742"><p>Hi Birdshooter and Crispin Goodall,</p><p></p><p>Thanks for your advice. Bearing surface length and seating depth could make a difference. I'll have to check the bearing surface length. I thought that the A-frame actually had a longer bearing suface. And yes, since the Accubond is considerably longer than the A-frame, it is seated further down into the case which could affect pressure, depending on who you talk to again... Both bullets are seated to 3.677 COL to fit the magazine. This puts me .106 off the lands with the A-frame and .150 (using Sinclair OAL tool and bullet comparator) off the lands with the Accubond. I'll just have to keep playing with this.</p><p></p><p>What do you guys think of the copper fouling issue? </p><p></p><p>Also, what experience to people have with shooting a few rounds with a certain powder at the range and then shooting a few more rounds of a different powder without cleaning? Can this result in some type of abnormal powder fouling that could affect pressures?</p><p></p><p>Crispin, I've got some Retumbo and it has seemed to pressure out before RL25 in my rifle, but perhaps I haven't given it a fair test because I've always shot it after shooting some other powder for awhile(see above paragraph) without cleaning in between powders. Ideas? </p><p></p><p>Crispin, what kind of performance have you gotten out of VV 170? What is your load with VV 170? This seems like it might be a good powder for the 300RUM. I've also tried H50BMG, but can't cram enough in the case to get a decent velocity with my stock 26" tube.</p><p></p><p>Does anybody know if RL25 is sold as a temp insensitive powder?</p><p></p><p>Thanks for your help and ideas,</p><p></p><p>Jon Denham</p></blockquote><p></p>
[QUOTE="jmden, post: 33828, member: 1742"] Hi Birdshooter and Crispin Goodall, Thanks for your advice. Bearing surface length and seating depth could make a difference. I'll have to check the bearing surface length. I thought that the A-frame actually had a longer bearing suface. And yes, since the Accubond is considerably longer than the A-frame, it is seated further down into the case which could affect pressure, depending on who you talk to again... Both bullets are seated to 3.677 COL to fit the magazine. This puts me .106 off the lands with the A-frame and .150 (using Sinclair OAL tool and bullet comparator) off the lands with the Accubond. I'll just have to keep playing with this. What do you guys think of the copper fouling issue? Also, what experience to people have with shooting a few rounds with a certain powder at the range and then shooting a few more rounds of a different powder without cleaning? Can this result in some type of abnormal powder fouling that could affect pressures? Crispin, I've got some Retumbo and it has seemed to pressure out before RL25 in my rifle, but perhaps I haven't given it a fair test because I've always shot it after shooting some other powder for awhile(see above paragraph) without cleaning in between powders. Ideas? Crispin, what kind of performance have you gotten out of VV 170? What is your load with VV 170? This seems like it might be a good powder for the 300RUM. I've also tried H50BMG, but can't cram enough in the case to get a decent velocity with my stock 26" tube. Does anybody know if RL25 is sold as a temp insensitive powder? Thanks for your help and ideas, Jon Denham [/QUOTE]
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