Ron IL
Bearcat
I have read a lot of threads about using small rifle primers in place of small pistol primers. I found a box with 42 small rifle primers in it and loaded them up in a 38 case for my GP100. I loaded them with the same bullets and cases as some I had loaded. I used Bullseye powder. I took my chrono and shot the 42 and 42 of my regular loads with small pistol primers. The rifle primers averaged about 12 fps more than the pistol primer loads. I think the difference would be different using other powders. I think some powders respond more or less to the primer change depending on burn rate. So when primers start showing up I will buy either one I can get. I think when primers show up I will retest this and will test it with Unique too. I use it a lot.