I found a two year old bugreport from “strv122” and wanted to share, i also added some more things.
slprj m/39 = tracer
projectile mass = 11g
velocity at 25m = 780m/s
pprj m/39 = armour piercing
projectile mass = 11.8g
velocity at 25m = 810m/s
penetration at 0m 0° = ~17mm
brandprj m/41 = its name is incendiary, but looks like API?
projectile mass = 9.8g
velocity at 25m = 835m/s
cant find the amount of explosives in the round
penetration at 0m 0° = ~15.5mm