So called shotgun powders can work wonderfully for handguns too!! Its just that most people use Red Dot for shotguns that's all.
Do some more reading of your manuals, there is a "plethora" of information inside. if your new at this and don't have many manuals. I like to suggest new loaders get the current edition of the LYMAN Manuel and read it!! Its excellent and well written. I like it as Lyman doesn't make powder, bullets or primers. So the data enclosed is wide spread utilizing most common powders, bullets and primers.
Good luck,
CW