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Also, my comment regarding the 76mm being a high velocity cannon was in contrast to the 75mm fitted to Shermans prior to the M18 (M18s with the 76mm were rolling out months before Shermans were fitted with the “76mm gun, M1A1”) and not the HVAP ammo. Even without the HVAP ammo there was already the better part of a thousand feet per second muzzle velocity difference between the M18’s M1A1/M1A1C/M1A2 and the Sherman’s 75mm.
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http://bulletpicker.com/cartridge_-76mm-hvap-t_-m319.html
Also, my comment regarding the 76mm being a high velocity cannon was in contrast to the 75mm fitted to Shermans prior to the M18 (M18s with the 76mm were rolling out months before Shermans were fitted with the “76mm gun, M1A1”) and not the HVAP ammo. Even without the HVAP ammo there was already the better part of a thousand feet per second muzzle velocity difference between the M18’s M1A1/M1A1C/M1A2 and the Sherman’s 75mm.
Just so, though the earlier 75mm was thought to be better at performing HE tasks. A partial cure was the inclusion of 3 105 arty gun tanks being included in the HQ Section of a WWII Tank Battalion for any targets that deserved a good doaage of High Explosive. The higher velocity of the 76mm gun, as used in the late-war Shermans, M18 Hellcat and M41 light tank, caused its HE round to zip right through a structure or woodline, partially cured by fitting a *superquick* grazing fuze for HE work.
HVAP worked on killing Tigers in the 57mm/six-pounder antitank gun as well, and it's interesting to speculate how the 57mm-turreted version of the Ford M8/M20 Greyhound would have fared, had it reached serial production.