I have 2 Winchester M70s, both classic stainless. One has the BOSS system on it, the other doesn't. One is a 7mm rem mag, nothing done with the trigger, the other is a 300RUM with a trigger job done. Both sit in drop in Winchester wood stocks, no bedding. Both shoot ragged holes to single holes at 100 yards. I have a Remington 798(mauser made in Europe) that I bought on a special sale rack at a gun shop in Tulsa. Paid $450 for it or about that, in 375H&H. Threw a new redfield 2-7x on it, and shoot ragged holes at 100 yards with it.
The point of all of that is, ignore all the glory ads that claim Remington or whoever is the most accurate rifle out of the box. All modern bolt action rifles are capable of these kind of groups. The things that make the biggest difference IMO is how good is the shooter and I mean that honestly, how good is the scope mounted, how good is the scope, how good is the trigger, and then the ammo used. I load my own ammo, and with that I've obtained the best groups. I have two Leupolds, one Oregon made Redfield(well leupold made redfield) and a Zeiss. I have two simmons scopes to which they sit on a shelf. I Loctite my scope mounts and use dovetail bases. I'm also not the kind that show up two weeks before season and expect perfect groups either. The gun is a tool. It is up to the shooter to be accurate.