couple of years ago i started trying reduced loads. pb seemed to work the best. tried 700x, sr4756,sr7625,unique, and bullseye. can load the pb down to 22mag velocities with sierra 40gr .223 bullet and shoots as well as 22 mag. tried hornady jet bullet also,but not as accurate. this was with cases loaded at least 6-8 times and trimmed to proper length. tried wspm and wsp not much difference in accuracy.