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Rifles, Reloading, Optics, Equipment
Reloading
264WM Throat Length?
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<blockquote data-quote="benchracer" data-source="post: 1469389" data-attributes="member: 22069"><p>My .264 is one of the South Carolina-produced Model 70's (not sure if that makes a difference). Out of the box, OAL to the lands with Berger 140 VLD's was 3.373 and with 140 AMAX's was 3.331. Definitely short throated.</p><p></p><p>Case capacity of Nosler brass fired in my rifle averages 87.8 grains. Filled to the base of the neck, my cases hold 83.5 grains of RL-33, 81.0 grains of Retumbo, and 84.5 grains of IMR 7828 SSC. None of these powders reach max charge anywhere near 100% case capacity. Having to seat bullets deeply in the case doesn't hurt performance in a case that is this overbore. As long as the ogive of your chosen bullet can be seated above the case mouth, I don't see a reason to lengthen the throat.</p><p></p><p>My .264 has shot well from the very beginning. If I had to criticize something, I am inclined to see the factory 9 twist barrel as more of a limitation than the short throat.</p></blockquote><p></p>
[QUOTE="benchracer, post: 1469389, member: 22069"] My .264 is one of the South Carolina-produced Model 70's (not sure if that makes a difference). Out of the box, OAL to the lands with Berger 140 VLD's was 3.373 and with 140 AMAX's was 3.331. Definitely short throated. Case capacity of Nosler brass fired in my rifle averages 87.8 grains. Filled to the base of the neck, my cases hold 83.5 grains of RL-33, 81.0 grains of Retumbo, and 84.5 grains of IMR 7828 SSC. None of these powders reach max charge anywhere near 100% case capacity. Having to seat bullets deeply in the case doesn't hurt performance in a case that is this overbore. As long as the ogive of your chosen bullet can be seated above the case mouth, I don't see a reason to lengthen the throat. My .264 has shot well from the very beginning. If I had to criticize something, I am inclined to see the factory 9 twist barrel as more of a limitation than the short throat. [/QUOTE]
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264WM Throat Length?
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