Just got my gun back from boresighting. I had taken off my scope with rings still attached.......mounted the scope on new gun with bases..... and vola ...bore sighted the gun in (not much adjustments needed) Took it to the range and it was set to go.

I never had to make 1 adjustment to the rifle at all. Bang on at 50 yards 1.5" high at 100 and (my shooting) was high at 200 yards by an 1" inch.

Must have been pure luck