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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Twist rate and bullet stability at 900 yards
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<blockquote data-quote="Len Backus" data-source="post: 29060" data-attributes="member: 1"><p>Great contributions from all. Thanks.</p><p></p><p>dbhostler and 4mesh063: </p><p>My velocity spread is quite good, not over 20 for extreme spread.</p><p></p><p>DWM</p><p>Temps were stable.</p><p></p><p>Jeff:</p><p>I'd like to see the bad bullet lot numbers. These are about a year old. I'm getting new ones this morning. The 7 Dakota pushes the 162 grain bullet at around 3300 FPS with 79 grains of H1000. In my 17 pound rifle it doesn't feel like a "big" gun. The 7 Ultra would probably need 20 grains more powder to get the same velocity and recoil would be much greater. </p><p></p><p>As I said, I only had time before dark for one group at 900 yards. If my long range groups are bad this morning I'll try sorting.</p></blockquote><p></p>
[QUOTE="Len Backus, post: 29060, member: 1"] Great contributions from all. Thanks. dbhostler and 4mesh063: My velocity spread is quite good, not over 20 for extreme spread. DWM Temps were stable. Jeff: I'd like to see the bad bullet lot numbers. These are about a year old. I'm getting new ones this morning. The 7 Dakota pushes the 162 grain bullet at around 3300 FPS with 79 grains of H1000. In my 17 pound rifle it doesn't feel like a "big" gun. The 7 Ultra would probably need 20 grains more powder to get the same velocity and recoil would be much greater. As I said, I only had time before dark for one group at 900 yards. If my long range groups are bad this morning I'll try sorting. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Twist rate and bullet stability at 900 yards
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