Re: Powder Temp and SHOOTER
The powder temperature should be a one time entry for each bullet/load you enter for a weapon. There is some magic number that is assumed if you do not enter a temperature. This is a standard number used by the powder industry that I can't recall right now.
When I find a load that I like and decide to chronograph the load, I record the temperature on site when I measure the velocity. Both pieces of data are entered at the same time on Shooter. It is not changed on a day by day basis like the air temperature is.