I want to cast 8mm bullets for my k98 and kraut-cano. The only lee pushthrough sizer they make close to that is .323 ("true" 8mm), I have always been under the impression that cast bullets needed to be .001 over (.324 in this case).

Should I get this and run some dummy bullets with lapping compound on to try and open the die up .001? or will a gas check mitigate the problem?