Not much experience shooting and testing, selling my last lot of Soviet 5.45 7N1 ammo as we speak. Supposedly, supposedly, from the rumor mill I've been hearing for a few yrs now, that there are several milion rds of Bulgy 5.45 steel core trying to get thru Customs or State Dept or somebody, and is being held up for various reasons. Maybe 1 day it will magically appear, but I wouldn't hold my breath on it waiting to show up. Hope this helps.