Had the 77/22 Blue/wood quite some time ago. Benched at 100 yards it would shoot 1" with I don't recall if it was Win 40 grain HP's or CCI 40 grain HP's. It was great for ground squirrels, extended my range considerably compared to the 22 LR I usually shot. It was my first 22 magnum, I didn't know what I had. Yep another stupid story... I sold it to buy the new 77/22 Hornet. Never bought the Hornet, as the gun rags said the Hornet was a great gun, but the best groups they got (at 100 yards) were 1 1/2", most worse, so I passed.
Years later I picked up one of the 77/22 Magnums with the heavy stainless barrel & laminated stock, thinking that it would even be more accurate. Despite a collection of every flavor of 22 Magnum and trying a couple of different scopes... I couldn't get it to shoot worth a damn.
Jerry
