specialist - While Mal H`s comment concerning differences in plated (Rainier) and jacketed bullets is generally accepted as true, the following is my pet load for the Rainier 155 FP:
6.6 gr Universal
Fed 1X Brass
Fed 100
Rainier 155 FP
1.126 OAL
.420 Crimp
Averages 1205 fps out of an H&K USP with no pressure signs or leading. This is considered a maximum load so work up slowly and carefully (.02 gr increments suggested) Tree Rat.
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