My son has a dpmslr308. We put a vari-xII on it as that is what we had on hand at the time. The ocular came lose from lock ring (wouldn't stay tight) in first three months. leupold was very helpful no complaints. The scope has started to loosen again. Here is the question. Is there a fix?(locktite) Or do I need to buy a better scope? MY GOOGLE-FU SUCKS.