I just measured neck diameter on a loaded round using the Nosler brass. It mikes .314"- same as vintage WW ammo. Those of you loading new Norma brass beware. Check the necks before you shoot. PS: In my rifle the N orma load chambers without resistance, but the tolerances are too close for normal pressures.

Last edited by rocky mtn bill; 09/04/19 12:13 PM.

Bill Ferguson