I have an Accumark in 338-378. My gun will shoot 1 MOA at 200 yards all day long. Accuracy all depends upon who is loading the components and how well they match each other, how much care is taken with each cartridge. I reload my ammo because the factory Weatherby ammo is redicoulously expensive.
it also depends upon how well the gun was built at the factory. to say that all Weatherby's roll off all the assembly line the same just ain't so. each barrel is a bit different, each machine process is a little different.
In my opinion Weatherby makes an exceptional rifle for the money. I had a Weatherby Mark V in .460 WM. it also shot very well.
Are you gonna take it over to Afganistan and snipe Taliban from 1000 yards, or shoot elk at 300? I heard tell that some 1000 yard shooters have been having good luck with the 30-378. If I had it to do all over again would I buy a Weatherby Accumark in 338-378? I sure would. It outdoes most all of the .338's hot rods by quite a bit. Look at the down range energy and drop. Pretty damn flat for a big .338 bullet!
I love my gun. I have a Bushnell Elite 4200 8 X 32 with AO on it. A really nice combination. The muzzle brake
works good on the gun, makes it about like shooting a 7mm mag.
Yeah my Weatherby 338-378 is an accurate one. I keep it spotless and I take a lot of care in my reloading.