10-4. U bet.
I found some s&l ? brass
Going to try varget with 175 smks?
Bore is tight , And tried to seat a 311 174 and it bulged a case.
So 308 it is. And let's see. Cleaning rods were tight.
Very early mod mn 4090 is the serial #
Bore looks solid clean rifling.
Let's see
Measured some factory ammo at 310 ? Some 308 so let's see