What is bi metal jacketed ammo?
Score: 4.5/5 (23 votes) Bi-metal jackets are made from very soft mild steel. Bores/barrels are at least as hard as tool steel and when chrome plated are even harder. Steel jacketed bullets are nothing new. The US had steel jacketed bullets in WWII chambered in 30-06 and 45 ACP.Is bimetal ammo bad?In...