When my Uncle first told me about it, I thought he might have been partaking too much if then "shine". He explained to me, the correct way to "bark" a squirrel, was to shoot the bark of the tree direct in front of it. Like I said, I thought my Uncle was out of it, until I tried it once when i was hunting alone. I did exactly as he had taught me, and sure enough, the sucker fell out of the tree. I when over to where it fell, it looked like it was dead, and after much poking with the barrel of my Marlin 60 to make sure, it sure enough was dead as a doornail. When my Aunt and I cleaned it out, there was not a mark on it.