
Gerry
Moderators: carlson1, Charles L. Cotton
Yeah, it will never work. The outer diameter of the gas check roughly the same as the OD of the bullet. The inner diameter of the gas check is the outer diameter minus twice the copper thickness. It will never fit on a bullet that does not have a reduced diameter shank to sit on. See the diagram below, The reduced diameter of the shank is smaller so that the gas check fits onto the bullet.Gyrogearhead wrote:I've been doing a little casting and want to do more. I've been thinking about adding gas checks to my 30cal Mauser Broomhandle boolets which I'm working up. My question now is why do I need a special mould to use gas checks? It seems to me that if you put the as-cast boolet in the gas check cap and squeeze it through a sizing die it is going to come out the right diameter regardless. Maybe a few thousandths longer to account for the lead displaced by the gas check collar but that shouldn't hurt anything as far as I can tell. Or am I missing something???![]()
Gerry
Thanks for the note J.F.Jumping Frog wrote:Yeah, it will never work. The outer diameter of the gas check roughly the same as the OD of the bullet. The inner diameter of the gas check is the outer diameter minus twice the copper thickness. It will never fit on a bullet that does not have a reduced diameter shank to sit on. See the diagram below, The reduced diameter of the shank is smaller so that the gas check fits onto the bullet.Gyrogearhead wrote:I've been doing a little casting and want to do more. I've been thinking about adding gas checks to my 30cal Mauser Broomhandle boolets which I'm working up. My question now is why do I need a special mould to use gas checks? It seems to me that if you put the as-cast boolet in the gas check cap and squeeze it through a sizing die it is going to come out the right diameter regardless. Maybe a few thousandths longer to account for the lead displaced by the gas check collar but that shouldn't hurt anything as far as I can tell. Or am I missing something???![]()
Gerry