Anyone know of a grip or maker who will fit a Bisley with a filler behind the trigger guard? Or, an aftermarket adapter like the Tyler held in place by the grip panels? 45 recoil is nailing middle finger and arthritic fingers are complaining.
Then I would also suggest the opposite. Try a higher grip with your knuckle against the trigger guard. It won't get a running start at your knuckle, more push, less smash.