I got this from my dad years ago..what caliber is this? Tia

[TheStig500]

It’s a spent .50 BMG cartridge from WWII. It was made at the Milwaukee Ordnance Plant in 1943.

[Tango-Actual90]

.50BMG

It looks like the round has been fired, retrieved and then reloaded because it has the rifling grooves.

[txbluelacy]

Adequate

[BussReplyMail]

Best guess? .50BMG Stick a ruler behind the round, right where the bullet enters the case and that’ll give you a goodish idea of the size and from there it’d be easy to say for sure, but unless you’ve got tiny hands, I’m sticking with .50BMG

[gmwit123]

Send it

[imsp33d]

50.calibre

[President_Elect_JH]

Start putting it in rifles and pulling the trigger until it discharges, thats what I would do.

[BroadwayBagle]

Big

[thefirstofthe77]

A big one