Well, yesterday morning I took two non-hunting, non-archer friends out for a walk in search of pigs. I brought along my little K-Mag for them to shoot at termite mounds. Anyway, I strung my 80# @ 28" (~83# for me) Silvertip recurve, and went to go through my usual routine of having a few warm-up shots into the dirt. I drew back, and upon release was horrified to hear an explosion and see my arrow (two pieces thereof) land about three or four metres away. My mind went a bit numb, and it took a few moments to realise what had happened, and then to realise that I'm still in one piece and hadn't been stabbed. It seems my nock failed. I examined my bow for signs of damage, and found none. I pulled it a quarter draw and half draw a few times. Then I shot it with another (obviously) arrow at half draw a couple of times. There were still no signs of trouble. I then shot it half-a-dozen times at full draw, with no trouble. We then went hunting, and I shot a few more arrows, unfortunately not at pigs; instead, it turned-out to be a morning of mercy killings, finding first one ribby cow stuck in the mud with no fight left in her, then another, even worse, and crawling with meat ants, and then a blind, sick, crashing walleroo, stuck in the bottom of a creek (it is that time of year where our grass is brown and useless, and the sick and old perish; the sun is our most ruthless killer, and the dingoes and ants eat these victims alive). Also, and this one has nothing to do with my dry fire, we found and caught a baby pig, as big as two-and-a-half of my fists put together, who had had the hide ripped off of his right flank from neck to middle, leaving just hardened, blackened muscle and stomach underneath, oozing blood through the cracks. I wonder if it was the work of a dingo, or of a boar? Anyway, I had to put the brave little fellow down, too. So, it was quite an interesting, horrific morning. My bow seems fine. Has anybody else dry-fired their bow with a positive outcome (that is, the bow is still going strong)? Do nocks sometimes just give way? Is the explanation that anything that is made or manufactured can have hidden, invisible weaknesses?
Here are photos of the arrow (30", 110# Douglas fir, wearing a 160 grain blunt):