When I started shooting Pcc I used autocomp because I had a lot. It was too dirty and lots of unburnt powder. Switched to titrgroup and that wasn't much better. I had a 4 pound jug if CSB1 that I bought during the Obama years panic. I gave it a try. It is the best pistol powder I have ever used. It's very clean and and shoots great. I ended up buying all I could from my friends. ( we split a barrel back then) I was told it's equivalent to universal.