The head space on my 3A Enfield had bad head space.
To move the shoulder forward, I made cases out of 30.06 and full sized to fit.
Worked great.
I have a Israeli Mauser, also in .308.
I remember reading someplace about putting tape around the base of the shell, and fire forming it to move the shoulder forward.
I think they were using a rimed case.
Has anyone tried this for a rimless case?????
Would save me lots of work.