I've shot sporter contour barrels into sub MOA with 10 shot groups at 200 and 300 yards fired in 60 to 70 seconds. So have several othersWe all know sporter contour barrels don't like heat from consecutive shots.
Remington never made target rifles as accurate and reliable as Winchester.
Never seen proof a rifle shoots the same size groups all the time.
I've never seen circa 1970's Model 700 that wouldn't shoot circles around any Winchester rifle.