I'll start by saying I'm not a big Leupold fan. However, after the Mk5 came out and initial experiences suggested it was a solid scope, I decided to try one out. I bought mine in early summer and took it out beyond 1,000 yards a bunch of times. I only have about 200 - 300 rounds on a relatively light 7 rem mag, but it has worked great so far.
This afternoon I had a few minutes of free time so I ran a true tracking test. My particular scope tracked 100% to 55 MOA over and over. So it's obviously a small sample, but I'm not too concerned about the Mk5 tracking.
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