While competing in 50Bmg matches all over the US for decades, I've seen every brand of rifle scope fail, with the exception of March scopes.
The only scope's I've ever mounted on a 50 that have never failed, are a March and a Mk4 LRT.
The Mk4 has been on seven 50 bmg rifles and currently sits on a Serbu semi.
I've never tested any of the newer Leupold scopes after the MK4, because I've never needed to buy another scope to replace it.
When the scopes would eventually fail and after I got them back from warranty repair, they've worked flawlessly on my puny rifles.
Do all of those brands of scopes that failed suck ? Nope, but according to my testing, the only scope that anyone should buy is a March scope. Hint..................
