I use 231 Winchester powder I switched to it because I thought it would be a cleaner powder . I shoot steel challenge matches and if you have ever shot a match you know you shoot a lot of rounds to complete a match. by the time I am done with a match my 627 pro series is pretty dirty . between the 231 and 158gr lead round (158 lrn ) nose it pretty dirty . should I clean it during the match, or is there a cleaner powder. any suggestion would be welcome.

p. s. I shoot 38 speical