Re: new idea is it crazy?
air density will still be different even if you ice down the rounds and the rifle. so if your planning to try to sim longer ranges then your results will not match.
Weatherby Vanguard 7mm Rem Mag
Vortex Viper PST 6-24x50 EBR1-MOA w/ Vortex Level
Weatherby Vanguard .257 WBY Mag
Vortex Viper 6.5-20x44 Mil-Dot