An extraordinary one, that I've recounted on here before:
Shot a fallow doe broadside at sensible range with 270, and watched in horror as all of her guts fell out on the side nearest me. Literally everything out, a clean gralloch more or less. As with all disasters, it seemed to unfold in front of me in slow motion, and it was just as though she'd been unzipped all the way along her side. And then she ran off, tripping over her own innards that were getting wrapped around her feet. Tried to jump a fence into forest about 300 yards away, but thank God the trailing guts prevented her from getting over. Then headed off in the direction of a road. I daredn't set off in pursuit as I'd probably have pushed her onto the road and lost all chance of a second shot. Just watched her through my bins until eventually she lay down and slowly expired, probably 500 yards away by this time.
When I eventually recovered her, it became apparent that my bullet had deflected off a rib on the entry side, turned through 90 degrees, and travelled the full length of her body just within the skin layer, effectively slicing her open as it went. It had exited far back on the flank, and then grazed a line across her haunch before carrying on to goodness knows where. There was absolutely no green contamination of the carcass - it was absolutely clean inside.