Your going to have to get at least two I reckon. Let us know the calibers.

You definatley can combine pistol and shotgun, but rifle would be tough unless its 44mag out of a carbine or 22 hornet that can utilize fast burning powder.

A unique or longshot load can be combined for pistols and shotguns pretty easily. You can use those two powders for a multitude of pistols, and just about any shotgun load.