Thread: 300 Blackout Fired In 223

Originally Posted by Hayden

I know of a Thompson encore .223 that had a .222 round accidentally fired through it out of a new box of shop bought .223 ammo. Needless to say the shop/ammo manufacturer swiftly replaced the heavily damaged rifle with minimal fuss! Incredible the forces present in such a small cartridge.

I'm sure I recall someone on here saying they did that for years back in the times when deer cullers were moving from .222 to .223, someone shot hundreds of deer with left over .222 cartridges in a rifle chambered for .223. Eventually caused problems, but not for quite some time. Not something I would try!