This might get long so bear with me. Let's say I am out shooting at my favorite spot at sea level. It is 90* and I set my zero at 100yrds, punch temp, humid, bc, mv, baro pressure. I validate all my drops out to 1000yards and all is good. The next day I decide to run up to 10,000 feet were the migration has just started. I punch in the new baro, temp, humidity, all the good stuff. Will My drops be close enough to keep it in the kill zone to 1000 yards, short of re-zeroing and re-validating??? I have not had a chance to verify this myself, which is what I usually like to do, but in my mind it can't be even though I have been told it will be. At both locations the program "assumes" you zeroed the gun at 100 yards (which I didn't) and I doubt the zero can be the same given the different conditions/elevations. So has anyone verified how much the difference is??? Is it negligible??