I'll add to the conversation in case anyone is interested.
284 Win GAP specced reamer (don't remember the details at the moment).
Tikka T3, Brux #3, 24", chambered by myself. Velocities determined with a ProChrono
I'm currently shooting 145 LRX, RL 17, Lapua brass at 3000+ fps, .75 groups at 100. This has killed two cow elk so far, both fell over dead where they stood. One at about 380 yds and the other at 420. I recovered one bullet - perfect expansion.
160 Nosler AB, RL 17, 2900+ fps, .5" at 100, one dead elk, DRT
I'm currently working on 162 ELD X and RL 26 - waiting for winter to ease before moving forward with load development