I would get a sample pack from NSA in .356 and 357 maybe even can mix and match not sure doesn't hurt to ask .that way you can find the size and weight your rifle likes, be advised after full power mods gun will not be BYF even with pitbull mega moderator, best to compromise and go for a less than full power tune IMO . I'm also waiting on a as valve from travis could be a game changer.