You mean giving guns other forms of ammo?
Have you looked at:
[SUBMARINE_AMMOLIMITS1] ;105mm
MaxAmmoPerSlot=
[SUBMARINE_AMMOLIMITS2] ;88mm
MaxAmmoPerSlot=
[SUBMARINE_AMMOLIMITS3] ;37mm
MaxAmmoPerSlot=
[SUBMARINE_AMMOLIMITS4] ;20mm
;MaxAmmoPerSlot=
MaxAmmoPerSlot=
and:
[AMMO_TYPE0];10.5cm SK C/32
Idx=0
Year=1939
Month=1
;AP=
;HE=
;SS=
AP=0
HE=
SS=0
Renown=0
in the basic cfg file?
Change the number of shells for the appropriate gun, but make sure you don't exceed the aforementioned's ammo limits.
If that's what you are asking