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13,729 Posts
Discussion Starter · #1 ·
i'm a fan of IMR 4320 would like to use it in 6.5 grendel with a 90gr speer.
it's a step above 748 on burn rate.
if ya have the program run 32gr 0f 4320 and a 90gr speer tnt hornady case.

mean while i'l use 8208 :)
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