I have a R700 .308 varmint 24" (pretty sure 1:12 twist factory barrel). Leupold Mk4 glass, stock pro-x trigger lightened to 4lbs, and a B&C Mk2 stock.
the other day i shot:
SWA 155 OTM, HSM Hornady 168 Amax, and SWA 175 SMK
in the beginning the 175 SMK was making same hole shots at 100yds...