grafs has Peterson 300WinMag Long brass...it's designed to headspace off the shoulder which is supposed to increase the number of reloads and reduce case head separation.
All 50 count listings of Peterson Cartridge casings come in one of their plastic ammo boxes. Made in the U.S.A. Peterson Cartridge Co. of Pittsburgh, PA announced it is producing .300 Win Mag casings in two versions. Peterson makes the traditional SAAMI spec’d version that headspaces off the...