What is the correct gas check for the large 45 calibers? I use Hornady gas checks on my .452s and they seat and crimp nice and tight on the base. They measure around .4605" in diameter before application so they would be squeezed a bit if run through a .458 or .459 die but I wonder if that is enough to hold them. Additionally, are gas check bullet molds from the major makers, Lyman, RCBS and others, cut to take this same gas check. If not Hornady, who?
An additional question regarding gas checks; is there another gas check for the 41 Mag besides the thin one which Lyman sells (which doesn't crimp on)?
