MarkJD,
Between you and Snuffy, you seem to have identified the problem. Snuffy put in a double charge of 21.8 grains into a case and it fit. You put a double charge of the "same weight" in and it overflowed the case. I seriously doubt the two of you are weighing the same 10.9 grains of powder.
Regarding your .45 ACP sizing die, you are operating on the assumption the brass has the same wall thickness. It may not. But this is not going to produce a pressure issue.
Quote:
Originally Posted by Magnum Wheel Man
I certainly wouldn't recommend it, but would have guessed a Ruger could take as much Unique as you could fit in a case???
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QuickLOAD estimates 60,000 psi if you do that. Definitely NOT a safe idea.