bronc

Hi, I am wanting to lighten the trigger pull on my S&W 617, its a .22 cal 10 shot revolver. I shoot it DA, so can I bob the hammer like 4Mike's or like Tampaxd45's 686 hammer (I really like). If I lighten the hammer by bobbing it and put lighter springs will i get reliable firing? I am open to all suggestions on how to get a really nice trigger.