A leupold in 2x7 would work very well for a 336. I have a 1.5x4.5 power Bushnell on mine would have preferred a 2x7. I have a 2x7 Nikon Prostaff on my ML.
I have see through bases on my 336, but would not suggest them to others, as they do require you to have your head higher than with normal height bases.