I'm looking for a scope for my Marlin 336 also. I have an old Redfield Tracker 3-9X 40mm on it and I'm looking a something shorter, lighter, and less magnification. Depending on how much you want to spend, there are several 1-4X or even 2-7X scopes out there from $63 (Bushnell Banner 1-4X) to several hundred dollars. The one that I have been looking at with the most interest is the Redfield 2-7X 32mm.