Here is an interesting test I like to do after you have your load worked out and scope zeroed they way you want it. Take your rifle of choice out and put up a paper target at whatever range you like. Shoot one cold bore shot and take the target down and take it home with you. Keep shooting other targets if you like but save that one with the cold bore shot for the next range trip. Do that every month or two till you have 6 or 8 shots on the same target in different weather conditions and seasons. Leave the scope caps on. You may just find that you have a rifle that shoots nice little .75 moa groups when they are all shot in the same session, but the cold bore shots combined make for a 2 or 3” group because poi is changing with temperatures or humidity or whatever. Likewise you may also suprize yourself and find that a rifle that shoots rather ho hum groups is very consistent on the cold bore shot. This can be an enlightening and frustrating exorcise!