When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I used to shoot lead through my USP .45 and never had a single issue. Granted it's an older model, but still...
they went to the polygon rifling in the mid 90's. even at that as long as you use good bullets with a proper load and clean your gun as often as you should. it really shouldn't be a problem.