I tried a wolf spring in it and it made the pull heavier. Same with my 1st and second stage in my andaconda. Both factory trigger springs i ended up putting back in after some polishing. My vaquero brakes at 2 lbs 4 oz. I pull the trigger with just the tip of my finger like I do when I'm using a target rifle or predator rig. I still can't find what someone referred to as a hold chart. I know the pistol feels small in my hand with ruger factory faux ivory grips.