If your screw holds the base-pin tightly into the frame, this will damage the base-pin and make it eventually impossible to remove. The screw should fit tightly into the frame and the base-pin should have a hair of movement. This is a newly manufactured screw that is specially designed to fit the Black Powder Frame Colt SAA. The new screw is on the left and the stock screw is on the right. The new screw will also eliminate the exsecive fore and aft drift of some base pins. Some move 1/8 of and inch. Notice there is no threading at the tip so they won’t mess up the threads in the frame if you remove it completely. These are hand made and hand fit to give .008″ of play in the base pin. I must have your firearm to fit these screws.