HEAT type penetration..

[Djuice]

What i know of the affects HEAT penetration, Warhead Size, Weapon Size and Survivability.

I test fired a SAGGER AT-3 9M14 with a penetration value of 40, and warhead size of 3 and weapon size of 1. The target was a Leopard 2A6 with frontal turret HEAT value of 130, with Survivability of 6.

100 Fired, 65 hit, 21 were non-penetrating, and 44 were sucessful. Average penetration value was 46 with highest @ 51 and lowest @ 12.

The next thing i did was decrease the warhead size to 2 and tested it again.

100 Fired, 67 hit, 22 were non-penetrating, and 45 were sucessful. Average penetration value was 47 with highest @ 53 and lowest @ 5.

What other settings affects how HEAT type penetration are calculated?