On many screenshots I saw armour piercing capability on ranges. For example F-34 canon from T-34 have 33mm armour penetration on distance of 500m!!! (it should be about 73mm). Even on 2000m it should be 51mm!!! http://www.theatreofwar.de/pics/1152_big.jpg On many other screenshots I saw maximum scale for armour penetration 500m and armour piercing was understate too...