When I've had a problem like that, it has been because I rest the rifle in a different way and/or touch the barrel to the rest on a different place on the fore end, causing a different POI. I also have noticed that a hot barrel/receiver will start stringing the groups on certain lever rifles. I always sight in my hunting rifles of all types with a dead cold barrel......your first shot hunting is always a cold barrel.
Last edited by reivertom; 01/20/21.
