ObjectTemplate.AmmoType

MDT description

Ammo type sets the type of ammo the weapon uses:

1 - rifles, handguns, SMGs
2 - exppack, landmine
3 - bazooka, Calliope tank shells
6 - jeep and scout car horn
7 - axis bombs
8 - MG42, axis plane guns
9 - allied bombs, Junkers bombs
10 - Browning MG, allied plane guns, Junkers' belly gun
14 - PT boat machineguns
15 - PT boat torpedoes

This characteristic is mostly important for resupply, as ammo boxes and airfields have only certain types of ammunition available. See AddAmmoType.

Source and more details