Re: Muzzle Velocity at Different Altitudes
Originally Posted by One_Duck_Limit
Is this something I can calculate? Or is it more shoot through the chrony during different temps?
I shoot a 7mm Rem Mag. I'm in the process of working up a load using 168g Berger VLD's using Retumbo and Fed. 215's or 210's.
It is not something you can calculate. You will need to test some at 0 degrees and 80 degrees or at the low end of the temps you hunt in and the high end. If the difference is only between 30-60 degrees, using extreme powder, it will be of little concern. But if you go from 10 degrees one hunt and 90+ the next, you will want to test your load at each temp. Then you can calculate the difference per degree for an average loss or gain.
Many many factors go into what makes a load sensitive or not sensitive to temp changes and those variables are not always predictable.
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.