If you're not happy with a 25-06 on deer, & a 260 Rem leaves your shoulder sore, then all the Creedmoors or PRC's in the world aren't going to help. Contrary to popular belief, given just a bit of mag room & some throat, the 260 can & will outperform a 6.5 CM. The 25-06? no flies on it pushing a 115 @ 3200, the wrong bullet selection might have come into play. But I'm like most, & getting a new rifle, especially a custom is a wonderful thing.

Better bullet selection & recoil taming methods are going to be necessary.