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Rifles, Reloading, Optics, Equipment
Reloading
US 869 for 300PRC?
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<blockquote data-quote="Calvin45" data-source="post: 1915046" data-attributes="member: 109862"><p>Hi Jack, I see no one even replied to you on here which is really odd.</p><p></p><p>I have no experience with the .300 prc or the us869 ball powder so take this for what it's worth.</p><p></p><p>I do have experience with h-50bmg stick powder in .300 win mag.</p><p></p><p>869 and 50bmg are effectively the same burn rate. They're not interchangeable per say but 869 is 50bmgs replacement. If one shines in a given cartridge then the other most certainly will give similar results.</p><p></p><p>300 prc has slightly more capacity than 300 win mag though not a ton, they are comparable, if a powder works great in one it will certainly work great in the other, if a powder kind of sucks in one it will not do well in the other.</p><p></p><p>there is no bullet heavy enough to make 50 bmg optimal in a .300 win and I suspect the same is true for 869 in the prc. I loaded 208 and 220 grain bullets over 50bmg just to see what she'd do.</p><p></p><p>first off, surprising and astounding accuracy. The only true one hole groups that old series one vanguard ever shot where with those stupid 50bmg loads and 208 bthp and 220 rn bullets. very accurate, crazy low es numbers. BUT even when very forcefully compressing 83 grains (yes, I fit 83 grains into a .300 win) it barely broke 2600 FPS with the 208. That's about 300FPS short of full capability with pretty much any more appropriate propellant. Cool light show, a KABOOM! to wake the dead, very sooty and dirty.</p><p></p><p>only possibility I see is with a compressed load under a 250 atip.</p><p></p><p>hodgdon lists no data for this powder in this cartridge and they do have data for 8133 and retumbo, but it seems their silence would further strengthen my suspicion: it's just too slow burning.</p></blockquote><p></p>
[QUOTE="Calvin45, post: 1915046, member: 109862"] Hi Jack, I see no one even replied to you on here which is really odd. I have no experience with the .300 prc or the us869 ball powder so take this for what it’s worth. I do have experience with h-50bmg stick powder in .300 win mag. 869 and 50bmg are effectively the same burn rate. They’re not interchangeable per say but 869 is 50bmgs replacement. If one shines in a given cartridge then the other most certainly will give similar results. 300 prc has slightly more capacity than 300 win mag though not a ton, they are comparable, if a powder works great in one it will certainly work great in the other, if a powder kind of sucks in one it will not do well in the other. there is no bullet heavy enough to make 50 bmg optimal in a .300 win and I suspect the same is true for 869 in the prc. I loaded 208 and 220 grain bullets over 50bmg just to see what she’d do. first off, surprising and astounding accuracy. The only true one hole groups that old series one vanguard ever shot where with those stupid 50bmg loads and 208 bthp and 220 rn bullets. very accurate, crazy low es numbers. BUT even when very forcefully compressing 83 grains (yes, I fit 83 grains into a .300 win) it barely broke 2600 FPS with the 208. That’s about 300FPS short of full capability with pretty much any more appropriate propellant. Cool light show, a KABOOM! to wake the dead, very sooty and dirty. only possibility I see is with a compressed load under a 250 atip. hodgdon lists no data for this powder in this cartridge and they do have data for 8133 and retumbo, but it seems their silence would further strengthen my suspicion: it’s just too slow burning. [/QUOTE]
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US 869 for 300PRC?
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