Re: How bullet impact is affected by altitude and temperature...
It involves calculus so no there arent any usefull formulas to quickly figure it out.
The quickest is to use a ballistic calculator on a pocket PC in the field.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.