Well, I see a few of these in and out of my shop every year. So, typical accuracy is around 1 to 1-1/2 MOA. Worst I have seen was around 2-1/2". Best I have shot myself was right around 3/4" at 100 yds. But keep in mind that Model 70s are a hunting rifle, not an accuracy rifle, and the weak link in a hunting rifle is the hairless monkey attached to the butt end. Under field conditions, that 1-1/2 MOA rifle will shoot just as well as a 1/2 MOA plastic stocked tubular action rifle. I hunted with a Ruger 77 for a number of years, killed deer and pigs and ground squirrels and coyotes with it, and the best it ever shot was about 1-1/2 MOA.
Model 70s are an "old school" action: massive forging, flat bottom, forged bolt, integral recoil lug on the receiver (compared to Savage, Remington, Ruger et al who use tubular actions, mlti-piece bolts, captured recoil lug, etc, etc). Not much different than a similar rifle 100 years ago. But they are pretty: nice wood, cut checkering, blued steel. A friend of mine has gone through his gun cabinet over the past year and replaced all his rifles with 6 Model 70 Super Grades. 243, 270, 30-06, 338 Win Mag, 375 H&H, and 416 Rem Mag, IIRC. He wants me to make him a 7-08, I told him just buy another 70 Super Grade in 243 or 308 and I'll rebarrel it and it'll match the rest.