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Old April 2, 2014, 11:43 AM   #11
Unclenick
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Join Date: March 4, 2005
Location: Ohio
Posts: 13,897
Apparently folks are reading the thread title and not the OP. The quest isn't simply for a clean 9 mm powder. It's for a clean powder that reaches high velocity without bulging cases when fired in a S&W Shield, specifically. I'll edit the title to reflect this.

With 231/HP-38, again, it's faster than Universal so it won't address the bulge issue. That would take a slower burning powder that somehow burned cleanly despite running at lower peak pressure. I'm unaware of the availability of such a thing.
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Last edited by Unclenick; April 3, 2014 at 08:57 AM.
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