I've got a new Pietta Model 1873 revolver that I finally got around to sighting in with my handloads. My 200gr SWC loads are shooting 5 - 6 inches low at about 50 feet, and my 240gr loads are shooting about 3 - 4 inches low. How do you figure how much has to be removed from the front sight to raise the POI up 'X' number of inches? Thanks in advance for your reply.
Don