Pyrodex pellets are designed to bring cap and ball revolvers into the modern age! No flask or spout. No loose powder mess. Loading has never been cleaner or easier. These 30 grain volume pellets are intended for use in 44 or 45 caliber cap and ball revolvers. May be used in 45 caliber in-line muzzleloading rifles in conjunction with 50 grain pellets in combinations not exceeding 100 grains. Available in a 100-pellet box.