Honostaly untill you hit the Ascended ranks where the big "I" is picking up all your Ammo Costs who can afford the Ammo Prices (except mid ranked or higher Nobles, who still have to fire spairingly) I've found a simple way to side step the ongoing prohibitive cost of feading a Bolt Gun or Bolt Pistol
Bolt Pistol alternitive, Best Quality Hand Canon (650 Thrones) preferabaly a Carnodon (2000 Thrones) shure the intital outlay is higher but compare Ammo Costs 18 Thrones each for a Bolt Shell to 5 thrones for a pack of 6 Manstopers, Same Damage and better Pen and slightily better range at much lower cost all your giving up is the over kill type "E" damage for type "I"
Bolt Gun Alternitive, try a Best Quality Armogedon (1000 Thrones) loaded with Manstopers, suere you give up some Pen comparativaly and Damage is "I" not ""E" but you get a Full Auto option and slightiy better range and you can always fork over extra cash for the extended clip option.
Start-up Chost is higher but a normal hand canon will have paied for it's self in the first adventuere and an Armogedon within 2-3 and 3-5 for a Carnodon if your buying your own ammo (and if you don't need the Pen you can always use normal ammo) and it's an easer (Fel) roll to get your boss to cover the cost for a box of Manstopers than for a clip of Bolt shells.
now don't tell my GM or my Players, let's just keep it betwen you and me.