I don't know a lot about Weatherbys. I thought Howa made at least some of them. The M60 was a fair to middlin bullet launcher.
I'll disagree with you about the M-60 since I was a custodian of my unit's armory (USMC) and I wrote up the M-60s more often then anything else. Two things one was the bolt operating rod interface which was always wearing itself out and most egregiously the trigger mechanism which was unsafe at any speed. You know its trouble when the first thing they teach you about the M-60 is how to stop a "runaway" machine gun, twist the belt to break it so the gun runs out of ammo. M-249s for everybody