Just give Cimarron a call; if you have the box it helps. Tell them what you want to know and give them the model number
, etc. info the the label. They can tell you if you can use .44 special ammo. Some of the newer models can shoot
.44 Russian, .44 Colt, and .44 Special. I'd press them as to exactly what brand, bullet weight, etc. for those .44 Special rounds.
Good luck.