Cold barrel-warm barrel

[jmoore]

I would figure it tends to be colder up there , so maybe it takes two to reach " operating" temperature?
Chris

In Italy or Canada?


Zero shift can be influenced by quite a few factors- have you ensured the bore and chamber are perfectly free of oil before shooting? Do you disassemble your rifle between trips to the range?

Sometimes there's not much you can do about cold bore POI changes except to learn the rifle, though.