I have a 20 x 110 USN Cannon round. The headstamp is:
RNO - 9 - 64 - 20MM - MK5 - MOD.0 -
Does anyone know who made this case?
The projectile driving band is also marked “20MM MK 11 MOD 1 - C - 02 - GLN 01-73”. Does anyone know who made it?
As the dates are so far apart I am pretty sure this round was assembled from separate components.
Thanks in advance for any info.