In moving my reloading room a few weeks ago some things got misplaced, as they will sometimes do. In this case one of the things I lost was a box of .30 cal gas checks. I wanted to seat some checks on my newly PC'd bullets but they are nowhere to be found. Well I got to thinking I have a new box of .32 cal (8mm) checks that are not too far off in size so I tried checking with those. I could not make it work till I got the idea that maybe if I run the .30 cal bullets with check thru the 8mm sizer first it would small up the check enough to work. So I got a couple different results. If I pushed thru the .30 cal die base first the check came out rounded. If I pushed thru nose first it ends up with a dimple in the center. If I tried to seat the check without running it thru the 8mm die first it came out somewhat deformed.
Now the question. Will the rounded bottom check or the dimpled check work. without degrading bullet performance? I won't even try the deformed check.
Any thoughts? Anybody try this before?