7-300 Win Mag gets my vote since I load but 7 PRC is close. In my 7-300 Win Mag I’m running 175 Nosler ABLR at 3,062fps (could easily run 100fps faster but .3 MOA & single digit ES kept me right at 3,062 in a sweet node). Good 300 Win brass available from: ADG, Peterson, Norma, etc. and very...