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Is Velocity 'always' a good indication of pressure?
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<blockquote data-quote="royinidaho" data-source="post: 73411" data-attributes="member: 2011"><p><strong>Is Velocity \'always\' a good indication of pressure?</strong></p><p></p><p>Am shooting a factory 338 Win Mag. With 74gr RL-19 and Hornady 225 interlocks velocities are 2800+. Pressures seem high as indicated by Fed-215 primers filling out towards the pocket edge and a bit of flatening of head stamp words. No increased effort to open the bolt. Neck sized and reloaded they fit right back in.</p><p></p><p>Then there's the 75gr of RL-22 and the Sierra 250gr gameking. Pressures 'appear' quite a bit lower as indicated by the primer (edges still rounded) no head stamp deformation but, velocity is right at 2800fps. /ubbthreads/images/graemlins/confused.gif</p><p></p><p>There must be something I don't know. /ubbthreads/images/graemlins/frown.gif</p></blockquote><p></p>
[QUOTE="royinidaho, post: 73411, member: 2011"] [b]Is Velocity \'always\' a good indication of pressure?[/b] Am shooting a factory 338 Win Mag. With 74gr RL-19 and Hornady 225 interlocks velocities are 2800+. Pressures seem high as indicated by Fed-215 primers filling out towards the pocket edge and a bit of flatening of head stamp words. No increased effort to open the bolt. Neck sized and reloaded they fit right back in. Then there's the 75gr of RL-22 and the Sierra 250gr gameking. Pressures 'appear' quite a bit lower as indicated by the primer (edges still rounded) no head stamp deformation but, velocity is right at 2800fps. [img]/ubbthreads/images/graemlins/confused.gif[/img] There must be something I don't know. [img]/ubbthreads/images/graemlins/frown.gif[/img] [/QUOTE]
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Is Velocity 'always' a good indication of pressure?
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