I have a 4 inch 32 mag and installed a reduced rate spring to lower the pull weight. It worked out OK after polishing the internals because the trigger return was a bit 'slow'. This is in double action of course. I fear the pistol needs a bit more spring to truly make the trigger snap. Return on a double action revolver is as important as pull weight.. I love the little SP101 but it's trigger is a deffinite liability., I'd much rather have a J frame smith for social situations..