I've got two MP molds that are both GC designs. One is the Mjolnir HP and the other is a 100 grain 640 series HP bullet. I want to gas check these after powder coating but I noticed that the gas checks barely fit the shanks as it is before coating. I currently have .30 cal .015 thick copper checks from Sage. What is everyone using on their .32 bullets cast from MP molds? My alloy is 96-2-2, blended from pure lead, COWW and some extra tin.