OP
semperFi
Member
Took my 43c .22 J frame and didn't make too far past 50 rounds when I couldn't hit black anymore. I just used T birds and it sure leaded quick. I thoroughly clean after each session and you have to or you'll never hit paper again. I really wonder how some people have no problem with them at all ? Mixing copper rounds in with each 8 rounds last time prevented the leading. The smaller brush made the initial bore punching manageable. Only 2000 more rounds of thunderbirds to go!
