bigcountry,
If your speaking of the "Hot Shot" nipple used in sidelocks with the 2 pin holes in side of nipple - they do not change POI. They were designed to eliminate ignition problems in sidelocks - they did just that! I installed one in my CVA side lock(1st smoke pole) about 18 yrs ago. I had the occasional ignition problem(using FF BP). After installing hot shot nipple I never had another ignition problem. Yrs ago they were probably the single hottest,cheapest thing to come out for improving sidelock ignition.Stores couldn't keep em on the shelf.