That's what happens, it drops more. Quite a bit, really. I'm still at the same elevation, maybe 3 feet above sea level. Around here the highest point within 60 miles or so is the highway overpass. Maybe the landfill. I guess I'll have to shoot it on paper in the cold weather sometime, it just adds to the confusion to have a different set of numbers to go by.
Also meant to ask, is it the air itself creating these condiitons, or the barrel temp.? Would keeping the gun in the truck all week be better than taking it in the house at night, or putting handwarmers in the gun case while in the field help anything? Just curious.