This question has been asked so many times.
The powders traditionally used are Unique, Bullesye, and 231. More modern powders are Universal and Power Pistol, to name a few.
The "best" powder is one that fills the case at least half way so you will know if you get a double charge.
Member: Orange Gunsite Family, NRA--Life, Varmint Hunters' Assn., ARTCA, American Legion, & South Cuyahoga Sportsmen's Assn.
Caveat Emptor: Cavery Grips from Clayton, NC. He is a ripoff