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Being a sample size of one, shot on different days by different shooters with unknown chronys or method of measurement Id say its a conclusion of very limited value.

Yes thats why I said "many situations" not All.

Yes basically, Powder sensitivity to temp change . I shot it over a range ambient temps at long range. So 243ai out to 800 yds and work the velocity back from the drop. then calculate the...

Once its established you dont have to enter it again, it just works of the atmo.
Excluding altitude,atmospheric change seems to cancel itself out in many situations as higher pressure usually comes...

Balistic AE has an option in reload data to allow for fps/ deg change. I find it works well. Its been a slow process to identify reliably, hoping the Labradar will speed this up a bit. I make sure...