About the only one lighter than yours still considered top quality would be the Leu 6x target at 13.6oz.
I have an as new one with fine x hair if you need one at a decent price.
I use a 6X Burris and love the dang thing. I hold center a lot and did plenty of it last Sat. at Wawarsing when it was pretty calm. I really like having 1/8" adjustments (1/16" at 50 yrds). A scope is an aiming device isn't it? The more precise, the better I like it. If they made one with 1/16" adjustments at 100 yds, I'd be interested. I'd gladly give up some clarity or brightness (we ain't birdwatching) for more precision in a scope.