Did a bore sight at 100m before going to the big paper for final adjustment. Bang, a hole 3" left of the pin I was targeting. Cranked over windage , bang ....what is going on ... the big black swipe appeared. Discovered I turned the windage the wrong way and my second bullet deflected off the metal upright which is beveled and redirected just like it was designed. Interesting to see the spray pattern. Yes, shrouds are a good idea when shooting steel.