I expect everyone except me has shot this bullet with out the check. My moulds are all old and have been around the block. They just barely drop .358 diameter and some not perfectly round. I have one mould that drops a good round bullet that measures .3615, an old Lyman one hole 358156. Who has used this bullet without the check, how fast did you push it and did it perform with a bare bottom? I'm too cheap to want to check my mid-range loads.