I am just getting back into reloading, I did years ago and only did 30-06...now I'm wanting to make up some .223, .40, 9mm, and .300 WM...I don't know the difference in the types of powder (ball, stick, flake, etc...) I figure this will help me decide which powder to use for each caliber--which ones dispense the best in my equipment (RCBS Chargemaster & Redding 3BR) Thanks!