I took my new-to-me Burris posi-lock (sitting on a 7mm-08 Encore pistol) to the range today. While I'm not a serious expert with a large pistol, I can usually maintain minute-of-deer results. I only had time to pop off 10 rounds starting at the 25 yd line to get it roughly on target then moving to 75 yds. My shots were pretty widespread. Perhaps some of it was my unfamiliarity with that pistol but I'm wondering if I'm using the posi-lock right. I left it unlocked between shots. I'm wondering if the proper process is to lock it back between shots to keep the zero from wondering.