Helo,

I had the same thought when I was cutting down my 204 sizing die to do the 20 Tac cases. I have a heavy barrel 204 upper that shoots like a dream and it would make a great 20 Tac but it is best left as is.

My cut down die works great for the 20 Tac cases and I'm thinking I will just use one of the new cases to set head space for the cut back 204 barrel. I may get to that tomorrow and if not it will be next week since I will be out of town after Tuesday. I will report results once it is set up in the Stevens action.