i have heard changing weather conditions will effect your zero. i zeroed my rifle in the summer when was about 90 degrees with a ton of humidity. between then and now most time spent with my riffle has been spent at 50 yards or less just trying to learn how to run it with some proficiency.
i had my riffle out this past weekend. it was about 50 degrees and very low humidity. i remembered to check my zero. it had not changed. i mean not at all. i just couldn't find any adjustments i needed to make. i was shooting roughly 3 moa (at 100 yards w/ 2 moa aimpoint) with my preferred ammo that i only really use to test for reliable function and check zero with. and i was happy with it.
from 90 degree summer heat to 50 degree fall/early winter weather..... i was pretty sure my zero should have done something. right?
do you change you zero for the changing seasons? should i consider my zero GTG, or wait until it hits 20 degrees and THEN check it? when do you see your zero shift? how dramatic is the shift you find in your zero? is it possible my zero HAS shifted but it is too small to notice at 100 yards?


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