These Crosman Revolver Bullet Cartridges are great for having spare ammo on your belt. For true to life shooting, use the ram rod to eject spent casings and then load fresh rounds as if you were in a gunfight in the Wild West. Buy multiple packs and fill up your gun belt so you're never without ammo. Note: This casing shoots BBs and is compatible with the SNR357 dual ammo revolver. Also works for Remington RR1875 BB/pellet revolver and CRVL357B and CRVL357S BB revolvers. Not compatible with pellets.