Weatherby has always guaranteed that their rifles, with their ammo, will put three shots inside an inch at 100 yards, or send it back.
For hunting, that's plenty good enough. Ya gotta remember they've never advertised themselves as makers of target/competition rifles.
I had to tweak with the forearm bedding of my Mark V '06, but thereafter I got mostly 3/4" five-shot groups. 4,000 rounds and 30 years later, I'm still staying well inside one inch for three-shot groups.
Art