- Posts: 145
- Joined: 11 Jan 2008 14:57
- Location: Pa
As stated above we know there was an increase in power charge during the war & there is that 1944 document that lists the Muzzle velocity as 770 m/s adding the increased range from the later optic implies the L/48 should have a higher MV compared to the L/43.
I personally believe the KwK 40 L/48 's muzzle-velocity is greater than 750 m/s at least in the 770 m/s range the lower figure is a result of the L/43, the use of Trop rounds & I think some of the data for example from Pawlas's datenblatt took the lowest number for the weapon system or perhaps early data due to several weapons having similar ballistics but different MV for example the soviet 76.2 mm Pak 36 (r),76.2 mm Pak 39(r) (the guy is shorter than the 36), 75mm KwK 40 L/43, Pak 40 & 75mm KwK 40 L/48, you will notice in Pawlas's book the same penetration figures (they are identical) printed for all these weapons & the Stuk 40 as well.