Re: 260 rem brass who makes the best????
+1 on Lapua brass. Necking them up is a small price to pay IMHO for what you gain in return.
Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, 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.