Re: 308 Win with 190 - 200's
I beg to differ regarding 190-200 grain bullets going subsonic at 1K. I consistently shoot them at less than 100' above sea level and sub zero temps.
The 190s are my favorite all around 308 bullet. You can get fair velocity with R15 and varget but if you want to step it up, N540, N550 and R17 are stellar.
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.