Had a rather interesting experience this evening. I was called out to shoot a marauding dog on the hill, a job I get quite often. Anyway, I took the 5.56 with a combination of 55g Vmax and some FMJ. When I got a chance to take the shot the range was less than 30m and I used the FMJ (actually scenars) as they have shown good results at short range in the past. First shot was on the money but the dog jumped and legged it. Stuck a Vmax in and drilled him at about 80m. On investigation I discovered that the scenar had clipped the upper leg bone and completely failed with no chest penetration whatsoever. Leg bone was still intact with only minor tissue damage around point of impact, in fact there were bits of jacket metal stuck in the skin. Has anyone else suffered similar failures at short range?