Originally Posted by
Oldtimr
I think you are talking about the trigger spring retaining spring, you want to leave that alone. Install the grips and put lots of presure on the grip where the pin is. It should leave a mark. Then take a small drill bit about the size of the pin and drill a small shallow hole by spinning the drill between your themb and forefinger till it is deep enough for the pin to fit in. If you have your owners manual check the exploded view page and look for the pin number, then check it against the list to find out if it is the trigger spring pin.
Originally Posted by
Oldtimr
51 in that diagram is the trigger spring pivot pin, which does not protrude from the sides of the frame. The grip panels need to fit flush against the frame in this area to hold this pin in place.
I think you meant to refer to part 54, which is kinda hard to tell which is which in the small diagram at midway. Part 54 is the trigger spring retaining pin, which is the splined double headed pin at the top rear of the grip backstrap. This pin holds the legs of the trigger reset spring. The ends of this pin do stick out of the frame to hold the trigger springs, but they are sunk into the recesses of the grip frame such that the grips do not need to be inlet to allow clearance for this pin. If that pin ever DOES contact a grip panel, it's somehow drifted too far to one side, or the user has incorrectly cut down the width of the backstrap. The molded grooves in the pachmayr grips are wider than this pin is long, so it can't make contact with that pin.
The only protruding pin that can contact grips in a Ruger single action grip frame - which is also the only of the 3 pins to be a roll pin - is the grip locator pin.