In 2010 I had KK Jenze build my light 338 nm.Hes head smith at Proof,I told him I was putting a mark 4 mil on build.Rifle just over 7#.He told me Id be lucky to get a year out of that scope.He ran Premier.I ran scope for a number of years hard mountain hunting and horseback, kills past 800.Before I ran vx3 on 340wby for truck load of elk, mil dot ,same out to 800 yrds.Still have scopes in use.Ive had a Leupold fog up on me and one on my dads 300 wby, cross hairs broke loose.I have march on light 338nm now, that went threw a roll over in my jeep and endue in back of cab,kept zero.I had a SWFA on my other heavy 338nm,worked well, very clear.That rifle now has a mark 5 ,5-25x56.This is the clearest scope I have when im lined up out back on wood line 1/4 mile, I can see the barbs on fence, not with my other optics.Thats my main rig rifle for LR practice,maily pop rocks with it at 800-1200.Last few times, seems as I haven't been quite on,well im canyon shooting and some wind.But im wondering if Im loosing my zero a bit, has 2# jewel in it, at 800 im usually spot on with a 300 0tm.Im curios to get out when weathers better, but if that Leupold not holding, Im scope shopping again.I saw a S&B for sale thats tempting me for a spare...Yes I have NF too.