Says 30MM right on the side. I've got a dummy round with the slug in it still - cheap add on to an order from Numrich Gun Parts back in the day that they coud mail things up here.
A-10 tank killer round. (or whatever needs a huge ass hole in it)![]()
It's marked 30mm, as in the second pic middle row. I just wanted to know which 30mm, as there are / have been a lot of different types.Just take a ruler and measure the case mouth. If it's 1 inch, then it's a 25mm, if it's just over 1 1/8" then it's a 30mm.
According to RobSmith, it's from a GAU-8. That makes the shell a remnant of a PGU-15/B, confirmed by more reading of the lettering, and a google image search confirms a match - it was a training round. Thanks for the lead, Rob!
Now to find reloading data![]()