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Rifles, Reloading, Optics, Equipment
Reloading
Powder burn rate question
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<blockquote data-quote="MagnumManiac" data-source="post: 2170240" data-attributes="member: 10755"><p>No matter what cartridge you're loading for, the top 3 powders producing the highest listed velocities are the most efficient powders for that cartridge, regardless of freebore amount, barrel length (to a point) or bullet you're using. HBN coatings change internal ballistics and must be noted, but this is a rule unto itself.</p><p>My Weatherby chambers, all but 1, run the traditional 1/2" of parallel freebore at .0005" over bullet diameter. I can safely add more powder than the book states with this freebore length due to the EXTRA capacity with the SAME powder as a normal 3/8" freebore gun, without going to a faster powder and I get more velocity at less pressure.</p><p>So, add ing more powder of the same type, rather than going faster in burn is where any advantage takes place.</p><p>Hope this helps.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2170240, member: 10755"] No matter what cartridge you’re loading for, the top 3 powders producing the highest listed velocities are the most efficient powders for that cartridge, regardless of freebore amount, barrel length (to a point) or bullet you’re using. HBN coatings change internal ballistics and must be noted, but this is a rule unto itself. My Weatherby chambers, all but 1, run the traditional 1/2” of parallel freebore at .0005” over bullet diameter. I can safely add more powder than the book states with this freebore length due to the EXTRA capacity with the SAME powder as a normal 3/8” freebore gun, without going to a faster powder and I get more velocity at less pressure. So, add ing more powder of the same type, rather than going faster in burn is where any advantage takes place. Hope this helps. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powder burn rate question
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