Thread: Used Brass in New Custom Chamber. 7mm SAUM.

I have quantity of used ADG brass, fired 2 - 3 times in my last custom chambered 7mm SAUM. I FL size after every firing and they all got annealed in an AMP after the last firing.

Thoughts on just continuing to run this used brass in my new 7mm SAUM with a new custom chamber? It seems to be a mixed bag, some say new chamber needs new brass and others say just crack on.

I understand new brass fireforms to a chamber, but won't firing the used brass that is FL sized just do the same and fireform into the new chamber too? Those margins will be so small, does it really matter?

Ta.