In my winter pistol league, it is standard to shoot soft hand loads because there is no minimum power factor. I don't want to shoot marshmallows but if I soften my loads a bit to be competitive, what do I need to change? I figure I'd need a weaker recoil spring. Maybe 13 pounds or so? Anything else? I'm shooting a G34 with 125-grain bullets, mixed brass, HP38 and Federal primers.