The calibers of these guns generally equate to the weight of the shell
no
caliber refers to length of the barrel.
if the barrel is 43 calibers, and the projetile is 75mm, then 75mmx43calibers=3325mm/25.4=127"/12"=10.5'.
so a 75mm gun of 43 calibers has a barrel lenght of 10.5 feet.
but however, the longer barrel DOES increase velocity and acuracy and range. the longer barrel
allows for more complete burning of the propellant charge and thus the above.
the PkW IV was used thru out the war, and the shell (75mmx495mm (AufF2) the barrel
got longer and longer, giving it the range and penatrating power.
for toejams and giggles the M3 gun used on the M4 is 75mmx350mm!
so can everyone see just by looking at the length of the shells for both of these 75mm rounds that the American sherman is just a waste of time!!
we HAVE a sherman...the Firefly...why the Frick do we need the Ronson?