I've had real good luck with TAC on 155 Nosler Custom, and 175 Sierra MK in both my Savage and Rem 700 LTR. I got lucky and both rifles are shooting the same load:
155 Nosler Custom
Lapua Brass
Remington Primer
46.4 RamShot TAC
~2880 FPS
2.81" COL (Savage and 700)
175 Sierra Matchking
Lapua...