Temperature change and accuracy question

[Don Fischer]

Let's see, temp change and accuracy. How many time's has anyone duplicated a group from a bench rest shooting in the same conditions two days in a row? I don't but for a hunting rifle a 1 1/2" group is good to go no matter the shape of the group!

 

[BrokenChicken]

I chrono my ELD-X ammo and use Hornady app. Based on my data (i use MIL spec)
Just for fun here: 8,500’, 35% humidity,0 wind
At 0F i need to come up 28 clicks 2.79 (mrads)
At 75F i need to come up 27 clicks 2.71 (mrads).
1 (0.1 mrad)click = 1cm@100m, so at 500m thats 5cm (2inch diff). Actual point of impact diff is less then that since its only 0.08 of a click but i round up/down.
So at 500 m diff is minimal even in 75F temp swing.