The brass will be feeding a couple guns, some of which will be semi auto. Having a custom die made is unfeasible. A small base die should be the ticket. However the set I got is bottoming out and not sizing enough. If it were just 1 bolt gun a custom die would be feasible.All companies new brass ain't exactly the same size.
Send a few new cases to a custom die maker and he will make one for you.
Right now I'm not sure whether the issue lies with the die, gauge, or shell plate. However after having 75pcs of brass that would not chamber, due to the shoulder not being pushed back far enough, with the die screwed down to touch the shellpate made be stop and evaluate as under sized brass is a problem I never had in over 12yrs of reloading.
My l.e Wilson headspace gauge should be here today. I'm gonna post an update with some pics comparing loaded factory ammo to my sized brass in both gauges.
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