Quote:
Originally Posted by Cross
Quote:
Originally Posted by jp10
According to FM 23-95 75-MM TANK GUN M2 (MOUNTED IN MEDIUM TANK M3)
May 4, 1942, the gun was measured "Length (muzzle to rear face of breech ring)". I would imagine it would be the same for the 75-MM Tank gun mounted in Medium Tank M4.
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It's my understanding that the rear of the breech is farthest from the loader and where the bore begins. This would appear to confirm that the L40 does refer to a bore length of 3007mm.
Cross
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I've contradicted myself...
If the continental armies also measured from the "rear face of the breech" then the USSR and Germany also used a bore length to determine the L** calibers, and my original source is wrong.
Don't you love rivet counting
Cross