Red Dot is probably the most used powder for your application, but I found, through extensive comparison testing, that Green Dot shoots "softer" when maintaining equal velocity. Some say that Green Dot is dirty, and there is some truth to that, but when I was big into trap, i.e. 35-40,000 rounds per year, I shot Green Dot exclusively and cleaned my gun once a year whether it needed it or not--never experienced any difficulties associated with it's lack of cleanliness. The gun was the same level of "dirty" after 20,000 rounds as it was after 100 rounds.