I had an old original (to the 1973 gun) Bushnell Sport view 4X scope, with those evil shoot through rings, that would consistently allow me sub moa groups at 100 yards. After stripping the old 336 down, re-finishing, and mounting low rings and a Nikon Prostaff 3-9X, it grew to 1.5 moa .... but that's with my re-loads. Guess I need to try the old factory Rem Core Lokt 150's again. I do like the Nikon Prostaff for the optics and the basic value for the 30-30.
jd