XOLATEM
Full Access Member
Another idea for hole-making is empty brass cases...used a drill to make the holes.
.22 and .223=5mm
.243=6mm and 1/4"
.280=7mm
.308 and .303=5/16"
.323=8mm
.44=7/16
Ma Deuce=1/2"
just in case you have some of that laying around and need to make a few gasket holes...
Just my .22...uh...I mean .02...