Remington Brass 300 Remington Ultra Mag Unprimed Bag of 50
As the toughest and most formable in the industry, our cartridge cases are carefully drawn from specially-alloyed brass to provide consistently exact internal volume and resistance to case stretching and brittleness. Primer pocket tolerances are held to .001". Finally, closely monitored case neck annealing assures easier re-sizing and longer reloading life. Unprimed brass. This is not loaded ammunition.