Yep
Wonder what one to use
Any thoughts ......???
Well the 32lb AT gun was developed from the 3.75 inch AA gun. The later versions of this tried using the Naval 4.5 inch with a 3.7 inch liner but settled on the 5.25 inch mount and a longer 3.7 inch barrel. This drove a shell up to 50,000ft (15,240m)! You could either use this, the muzzle velocity was over 4,000 fps or settle for a lower muzzle velocity and larger shell and go with the 5.25 barrel.