If I think long enough I could probably come up with more than one but here goes. I'm sitting in a ground blind, deer hunting with a Savage 24F O/U with 30-30 on top of a 12 ga. I know the rifle shoots well and I'm watching a trail that leads right past me to a food plot nearby. Sure enough, mid morning a huge doe that has eluded me twice before leads her 2 spiked young'uns down the trail right toward me. I have a doe tag so this time Momma is gonna be BBQ. With the fixed power 4X crosshairs resting on the front of her chest I let her walk to within 15 or 18 yards with no hint that she is knows I'm there. Easy shot, so... I take a deep breath, steady the rifle and proceed to jerk the trigger so hard it should have broke off the gun! I actually saw bark fly off the side of a tree at least 6 feet from my target. I don't know how or why but I never ever got that doe.