For the .45 acp and .45 Super you could get by with either Unique or PowerPistol just fine and it would work as light loads in the .44 magnum but there is NO powder that works in the upper ranges for all three calibers. If you are not using a powder like BlueDot or slower than BlueDot in a .44 mag then you might as well shoot a .44 special..And there is nothing wrong with that..If you are happy with the .44 special then the two powders mentioned above will work just fine!