The 4-12 I bought last year is going back for the second time cause it won't hold zero and it's only on a 270.
I bought a brand new MK4 LR/T Super-duper-whatever-the-[bleep] in 6.5-20X50mm. Went titts up in less than 50 rounds on a 12lb .308. I was so disgusted I am just now sending it off. Been sitting on my book shelf for about three weeks.
Travis