When I do my part and the weather conditions are good, my Browning A-Bolt SS .300 Win Mag will shoot sub MOA with 180 grain Nosler Partition Protected Point bullets (hand loads). I believe most modern bolt action rifles with a glass bedded action and carefully developed hand loads are capable of MOA accuracy. Some rifles may do as well with a particular factory loaded cartridge, but I have never attempted to find the best factory load for any rifle and I have never hunted with a factory load. (Please note I am not criticizing factory loads but I began learning reloading and shooting many years before I had an opportunity to hunt with a center fire rifle).
NRA Life Member - RMEF Life Member - Vietnam Vet