it's possible that there was a rock grown into some of the wood that you run through it. I watched a video on u tube. Guys were salvaging cuts from a lard stmp and ran into a large rock grown into the stump.
IPSC Alberta requires IPSC certified Range Officers. You have to be invited to become a Range Officer and must attend a two day course, then sucessfully show competence in Range Officer duties. To maintain your Range Officer status you then need to maintain 6 Points in a point system.
Was on a roll until the last stage. Got DQ'ed on the last stage. Cooked one off on " Load and Make Ready" Second day I let that event get into my head and wasn't shooting as well as I was the day before. Threw out 3 Mikes and picked up a no shoot. The added stress of becoming a Range Officer...