breechplug,

from sub 1in group at 50yrds to 3in groups at 50yrds, this was over a year ago, have not idea where I filed the pics of the target.

here one use that I never said, I have used bore butter as breech plug grease, the plug on my knight usak came out great. 20 shots no loosing, very little work to get it out. just a pita to clean.