What type of powder dispenser are you using? HP-38/W231 believe meters the best. My most used powder I use is Unique. Handles .32 ACP to .44 Mag. Powder I use now for my .45 ACP loads. AA#5 is another good ACP powder.
CD
The Dillon Powder measure on the 550B. I've been threatening to set the XL-650 up for .45 so I won't have to keep changing the primer feed system when changing from 9mm to .45acp. I've never used the 650 yet so it may be time to jump in and get it going too.
All will work but I favor Unique because i inspect every charge and Unique is easy to see right from wrong.
You may call me anal about that, but being so new to reloading, I visually check the level of the powder in EVERY case before I set a bullet into it. I periodically pull a charge and check it on the scale. I also randomly check COL to make sure that's still within tolerance of where I set it. After the complete set is loaded, I fire up an Excel spreadsheet I created. I measure every COL, and weigh each completed round. The spreadsheet gives me max, min, difference between them, and average values. I especially pay attention to the "difference" between max & min weight. I know it isn't exact, but I figure that if the difference is at or less than my charge weight, then I most likely haven't missed a charge, or worse, double charged any rounds. I know that there are variations in individual case and bullet weights, so it's not exact. I just use that to see if anything really "sticks out" of the set. After I'm satisfied with that, I enter the bottom line numbers into an Access database that I created, and those numbers become permanent records for that set. From that database, I can generate reports on each set, what sets I used each powder on, etc. I also use it to print the ID tag that goes with each set, which contains all the load details for that set. I want to expand it to include inventory control so whenever I buy more primers, bullets or powder, I can enter that information, and the database will keep track of where it all goes, and even generate a "shopping list" for me when supplies drop below my preset stock levels.
Thanks for all the input from everyone else too. From what y'all are saying, any one of the powders I have will work fine for .45, I just need to try them all and decide for myself. I'm ok with that, and at least no one has said, "Stay AWAY from such-and-such powder because..."
I still consider myself very much a "novice" reloader. What I know, I learned from reading everything I could, and asking lots of questions. Other than that, I pretty much taught myself. Safety is my MOST IMPORTANT part of reloading, and I figure as long as that remains at the top, then that clears the way for FUN.
Amen.