My Sig P320c has a 6 inch sight radius and after installing a new front sight POI is 2 inches left of POA at 22.5 feet. If possible I'd rather not use the trial and error method to drift the sight since I live about ten minutes from the range and could conceivably involve multiple trips back and forth. Does anybody know a formula that I can use to figure out how far to drift it and also if anybody has any tips on doing so I would appreciate it. I have a sight pusher tool so that part isn’t a problem. Thanks in advance guys.