Leupold is hard to beat for weight. Z5 Swarovski may be the best weight to quality out there. I had a Trijicon 3x9 that had great glass and was super light. Put it on a 5lb NULA.
Good scope but I would likely only be able to use it on a short action. It has a fairly short eye relief. I tried a Kahles with slightly longer tube and a 3.5" eye relief and it wouldn't adjust close enough to me for a good view without really crawling the stock.
The longer tube and eye relief plus light weight of the Z5 makes it attractive to me for a long action,even over scopes like the 2.5-10 Diavari mentioned.
