I used to shoot Pyrodex Select for a while. The supply of RS dried up and that was all there was. I really can't say I got all that better groups. It was more expensive I knew that. I was told that they screen it twice more then RS. But I never found the difference in the two so great as to justify spending the extra on it when RS came back in. Now I am only one case... there might be a lot of others that had better results with Select.