1. JLM

    Gunsmithing SAMMI Neck Dims for a .30-06?

    Anyone know offhand what the neck dimesions are in a SAMMI spec .30-06 chamber? My friend gave me some fired brass from their rifle and the necks measure right around .339-.340. Brass is Rem, and neck thickness is .012. Seems to me that if you used thick walled brass, say around .015 you be...