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RE: &.7 x 58s are NOT the same size as 7.7x56 / .303

Posted by pictureguy on March 14, 2017 at 23:40:26:

Interesting table.
I knew about how short the effective range was for aircraft mount MGs. But the Germans did have great luck with the thru-prop-hub 20mm cannon of the '109. Very Destructive.
I know the US P38 had a cannon, having a LOT of room in the nose, but don't know about others so equipped.

When I worked for the county in which I lived, I visited the Ballistics / Crime Lab and they had in their possession, a 20mm AntiTank Rifle of WWII vintage.
I have NO idea what a citizen was doing with THIS particular piece of history. And AMMO!