Mr. Bibbyman , thank you for your "helpful " post . I was having the same problem w/ my 44/40 loads ,, went and cked. my RCBS die's ,, expander miked @ .430 ,, my 92 Rossi miked @ 427 ,, reworked expander plug ,!!!! now holds bullets ( Lyman 427098 ) tight ,, this cast bullet does not have a crimping grove ,, but I still roll crimp right at the band ( lightly ) and it don't push back into the case. So thank you for the helpful ( over looked ) suggestion .
smoke'm if y'a got'm ,, Hootmix .