I learned a lesson a couple hunting season ago. I had removed my Nikon Tactical from my AR to still hunt with irons, and to shed a little weight for the couple mile stalking. I got to a location to sit for a few hours so I pull the scope out of my backpack and remounted it. The elevation was off by a couple clicks, so I put it back to zero and within a few minutes a giant coyote came into view. I took aim and fired. I saw the impact kick up dirt under him and he stood looking around. I thought I shot clean through him, so I sent another, and another. After the third, he got wise and bolted. I walked away from the area and sighted in on a target and found I was hitting 10 MOA low. When I pulled the scope out, it twisted the turret nearly a full revolution. So lesson learned is to pull the bolt and check POA by bore sighting before shooting- or just leave the scope on.
