F n m 56


#1

What is this?..case measures .4620 @ base / to 1st shoulder .961 / 2nd case dia. .392 / to 2nd shoulder 1.865 / 3 case dia. .351 … unfired 3 stake brass primer, bullet has been knocked back into the case but looks like a fmj, no powder remains…a close look gives the impression of a bullet crimp
any ideas?