"I recently went on an archery hog hunt in Texas with several friends. When it was still pretty dark I shot at a hog, striking the neck. The arrow made a spark when it impacted. The pig ran off with my arrow, leaving only a blood trail. I couldn't find the arrow or the hog. My so-called friends claim the broadhead couldn't have caused a spark and laugh loudly when I insist it did. They no longer want me to hunt hogs with them, saying I'll start a forest fire with my sparking arrows. Do you know if any other hog hunters have seen a spark on impact, or should I consider switching my brand of beer? --T.V. "