So main gun and mg ammo is not accounted for separately?
No. Its a simple percentage. And i actually think that is just fine. Just the t62 12.7 using a HUGE amount of that percentage. If you fire all its ammo but not the main gun ammo, your next turn will have that tank at 40 percent or less of ammo.
I do think that the percentage thing overall is fine. After battle cross leveling ammo or finding various ammo sorts is the normal thing. Just this 12.7mm ammo thing is nuts! 5 50 round cans of the stuff does not equal 30 115mm rounds! I do not notice the same thing with the M60....