Fred;
Just got back to Washington from a 5 day pheasant hunt in South Dakota. It was blistering cold for 4 out of the 5 days............-20 most of the time, and one day we had 25mph winds. At noon it would warm up to about -5, but thats about as warm as it would get. We got birds, but they were ultra wary and would flush wild when you would even slow the truck down, not to mention stopping and slamming a door. We used the old blocking technique and got shots,( they were the long 45+ yard ones).
I'm glad we didn't have your chart with us for the trip..........if we had, we probably would have just stayed inside and had hot buttered rums, and forgot about chasing ringnecks.
But seriously, that kind of cold with wind can do you in quickly. My Citori safety froze up and I couldn't get it off safe,........I took my gloves off to try and free it up and after about 30 seconds my finger tips were starting to go numb. After that I started carring an extra pair just in case I lost a glove.
Youv'e got to hand it to those South Dakotans, to get thru 3 months of that extreme weather, you have to be damm tough.
Gibby