I don't get why a 11-13oz scope is ideal and a 19oz scope is "so heavy" but if it has to be light it would be a 6x42 with LRD.
If you tell me that you're a back pack hunter and count every single ounce I stand corrected. Most that fret over a extra 7oz on their scope is just playing mind games.
I disagree. 6-7 extra ounces sitting right over the top of the action makes a big difference in the balance of a featherweight rifle.
I would think a 3.5-10x40 VX-3 with CDS would meet the OP's needs pretty well.
Ive never noticed any problem in how well I can shoot a rifle be the scope heavy or lite.
I do however often hike over 10 miles on various hunts and sometimes steep ground is involved. I can say on a long hike I notice a half pound a lot more than one would think. It might only be a half pound but its a half pound carried over one shoulder off center.
The liteweight mountain rifle in my experience is a concept that a lot of hunters who hike mountainous terrain appreciate. A lite scope is part of the package whether one is hiking 1 mile straight uphill or 10+ miles.
Trystan