Have a Remington 700 XCR 300wsm that absolutely would not hold groupings well at all: over 5 inch scatters. Took a few hundred dollars in ammo, time, swapping scopes, etc. to figure it out. I finally had Gander Mtn. send it back for meto them (Remington) to evaluate.
I know for a fact that they don't lap their barrels at all and I have seen some very ugly crowns on some at Gander mountain(and that is not to say that only GAnder has that type) . That would make a big difference. That gun and that cartridge has been an 1" and under gun in a Model 70, 2 weatherby vanguards, A browning Abolt and now finally a Sako 75 SM. I can't imagine it would do worse then that. Shoot it and if your not satisfied send the darn thing back..if they don't fix it right ..
get rid of it. I find that guns can give a shooter good or bade Mojo and if you don't think the gun is accurate or thatit can screw up it usually affects you and your shooting.