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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Another 200 gr ULD RBBT velocity/accuracy test........
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<blockquote data-quote="Fiftydriver" data-source="post: 76808" data-attributes="member: 10"><p>ss7mm,</p><p></p><p>TO be honest, I would have been happy with 3000-3050 fps in this barrel length. Even if I can go no higher with good reliability which I don;t believe is the case, I am totally satisfied with this level of performance. </p><p></p><p>In a 30" barrel I suspect she will push 3300 fps VERY hard, espeically in the 3 groove Lilja. But there is no need really. The 270 AM is doing great work with the 169.5 gr ULD at 3260 fps. I know for a fact the 7mm AM will get the 200 gr ULD going this velocity, plus you have the significantly higher BC, which is yet to be established for those out there worried about BCs!!! /ubbthreads/images/graemlins/grin.gif</p><p></p><p>The WC872 has always performed best in the top 5% of load pressures for me in the Allen Mags. It also burns much cleaner in this range. Lower pressure and its a coal factory. I suspect you will run out of case capacity before you get into high pressures with the Wby case. Curious to see how fast you can go though. If you get to close to the AMs performance, please don;t tell me!!!! /ubbthreads/images/graemlins/grin.gif</p><p></p><p>Have a good weekend,</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 76808, member: 10"] ss7mm, TO be honest, I would have been happy with 3000-3050 fps in this barrel length. Even if I can go no higher with good reliability which I don;t believe is the case, I am totally satisfied with this level of performance. In a 30" barrel I suspect she will push 3300 fps VERY hard, espeically in the 3 groove Lilja. But there is no need really. The 270 AM is doing great work with the 169.5 gr ULD at 3260 fps. I know for a fact the 7mm AM will get the 200 gr ULD going this velocity, plus you have the significantly higher BC, which is yet to be established for those out there worried about BCs!!! [img]/ubbthreads/images/graemlins/grin.gif[/img] The WC872 has always performed best in the top 5% of load pressures for me in the Allen Mags. It also burns much cleaner in this range. Lower pressure and its a coal factory. I suspect you will run out of case capacity before you get into high pressures with the Wby case. Curious to see how fast you can go though. If you get to close to the AMs performance, please don;t tell me!!!! [img]/ubbthreads/images/graemlins/grin.gif[/img] Have a good weekend, Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Another 200 gr ULD RBBT velocity/accuracy test........
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