Well, I just know arms from shooting in Call of Duty. But it is very interesting to see they are very similar in cold conditions to musical instruments. As cold tends to get instruments out of tune and you need to give them time to temper to the cold. This reminds me, if you ever go to a concert in a cold place and you see people who play wind instruments blowing into their instruments, it is because if they don't they won't make any sound when it is time to play.
Of course, this goes way from the point. I like the idea of keeping notes about performance in certain condition. Shooting a projectile at such a long range requires more precision of setting than actually firing the shot.