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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ALLEN PRECISION 338 Raptor update....
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<blockquote data-quote="Fiftydriver" data-source="post: 659214" data-attributes="member: 10"><p>B23,</p><p> </p><p>I can not say on the new 300 Raptor. The original design based on the Jamison 338 Excalibur parent case would break 3350 fps with the 230 gr Berger bullet with no undue stress and that brass was not overly strong, similiar to a Remington RUM case in handling pressure.</p><p> </p><p>The new production version of the 300 Raptor made by Bertram has a noticable increase in capacity and from tests I have run comparing Jamison and Bertram 408 Chey Tac brass, the Bertram was significantly stronger.</p><p> </p><p>I feel VERY confident that 3350 fps will be easy to get in the 300 Raptor and possibly 3400 fps with the new brass with the 230 gr Berger. That said, will the berger handle that velocity is the question. In my original rifle, I had a 1-9 twist, 3 groove Lilja barrel which is about as bad as it gets on berger bullets. Because of that, this test rifle perferred the 240 gr SMK loaded to 3300 fps.</p><p> </p><p>Berger recommends a 1-10 twist and I believe a standard 6 groove would produce fine accuracy with the berger 230 gr.</p><p> </p><p>The 338 Raptor should drive the 300 gr Berger to 3200 fps. Possibly slightly more but my goal right now is 3200 fps in a 30" barrel length.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 659214, member: 10"] B23, I can not say on the new 300 Raptor. The original design based on the Jamison 338 Excalibur parent case would break 3350 fps with the 230 gr Berger bullet with no undue stress and that brass was not overly strong, similiar to a Remington RUM case in handling pressure. The new production version of the 300 Raptor made by Bertram has a noticable increase in capacity and from tests I have run comparing Jamison and Bertram 408 Chey Tac brass, the Bertram was significantly stronger. I feel VERY confident that 3350 fps will be easy to get in the 300 Raptor and possibly 3400 fps with the new brass with the 230 gr Berger. That said, will the berger handle that velocity is the question. In my original rifle, I had a 1-9 twist, 3 groove Lilja barrel which is about as bad as it gets on berger bullets. Because of that, this test rifle perferred the 240 gr SMK loaded to 3300 fps. Berger recommends a 1-10 twist and I believe a standard 6 groove would produce fine accuracy with the berger 230 gr. The 338 Raptor should drive the 300 gr Berger to 3200 fps. Possibly slightly more but my goal right now is 3200 fps in a 30" barrel length. [/QUOTE]
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ALLEN PRECISION 338 Raptor update....
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