What is the most accurate and clean 9mm target ammo for an HK USP? A buddy bought 1000rds of some Russian stuff and it seemed to run dirty as Hell through his Beretta!! With the price of 1000rds of something like Winchester only about $10-$15 more I was wondering what I should buy when the time comes? Stopping power isn't that big of a deal, I'll use hollow pts for my home defense anyway.