Take your pick or your price. Remington 7400 series or mid-2000’s 750’s were good and reliable as long as they were kept clean. They were not designed to shoot continuous or 000’s of rounds. I sighted in a friends 750 and was able to coax 1.25 MOA out of it with the old Bronze Point ammo. They were also engineered to use heavy-for-caliber bullets in order to have reliable cycling. Kind of the F-150 of semis if you will. The BAR is a little more complex in its workings, but can be pegged as better built. It’s more expensive, kind of like the Toyota Tundra of semis lol. Remington is easier to work on, but parts are becoming scare. I have an eye on a European BAR in 9.3x62mm on Tradex.