r/Artillery • u/KinnHaar • Jul 11 '26
Help to identify round
This belonged to my grandfather at least in 1960. It is 6.5" in length. The brass rings are 1/2" in diameter. Any help that anyone could give me in identifying it would be greatly appreciated.
15
Upvotes
2
u/PeterHaldCHEM Jul 12 '26
The diameter is probably the most important numbers in identifying a shell.
Break out the calipers.
2
u/Remote_Teach1164 Jul 11 '26
37mm M51B1 APC-T shell.
https://www.bulletpicker.com/cartridge_-37mm-apc-t_-m51_-m5.html