Sat evening, nice yearling doe. Shot a little high and broke her back. Had to shoot again to put her down. At this point I'm really liking my flinter. Fast forward to Tues. evening. A herd of deer move into a food plot about an hour before dark. I'm in a ground blind with my rifle resting on a downed tree. I pull the trigger and klack, recock and again klack, once more and flash in the pan. At this point the deer leave. I pick the vent hole and sharpen the flint with my turnscrew and settle down to wait til dark. A doe steps out about 45 minutes later about 50 yards away. With my rifle resting on the downed tree in front of me I take careful aim and fire. She hits the ground, rolls twice, and starts kicking. much to my amazement as I'm reloading she gets up and stumbles into the woods. My partner comes up and we expect to find her just inside the woodline. We bloodtrail her in the dark for over 2 hours until we lose the trail. Good blood at first and then a drop every 50 feet or so. Went back the next morn and still didn't find her. I would have liked to known where I hit her. Still wondering if my 40 cal is enough gun for deer although I've seen this same thing happen with modern rifles. Not going to give up on the 40 cal. I'll hunt with it a lot more this year.