I got my first and only scope rash from a 30-06 shooting 130 grain bullets. I had been sitting my stand all afternoon as the temp dropped down into the low teens over six hours. I sit very quiet and still. I had no idea how cold I was until the deer came out and I was shaking so bad I couldn't hold the cross hairs on him. I forced myself to relax and made the shot fine, but I didn't hold onto the rifle. When I went to gut the deer I had the rubber gloves on and the knife out when I noticed I hadn't started on the deer but I already had blood on my hands. Climbing down from the stand and walking out to the deer circulated enough blood through my cold arms and legs that I really got cold. Fortunately my partner showed up and took the knife away from me or I'd likely have cut myself too. I never felt the scope hitting me. Probably a good thing I was so cold.