I had the same thing happen, same nock, I also don't know if it was damaged or not prior to me shooting. Now my silvertip has vertical lines in the glass at the curves. still shoots, just makes you want to cry though.

Blend some modern technology into your trad shooting and grab some carbon arrows....compounds are just as frustrating if not more

Agree with Redfish, make sure you get the string all the way to the base of the valley of the nock.

I had this problem.... I made sure I was using a serving that fit the nock all the way to the back of the nock.. Also, I am shooting a 62" bow with a 31" draw.. I believe with double nocking points and my draw length I was causing a pinch on the nock. I increased the distance between nocking points, and it hasn't happened again!

What about aluminums with push in nocks? I've never used them but i may try. Started another post about them as well. Thanks for the replies guys!

I've had a couple of those break on me as well. Definitely makes you worry about your bow.

I shoot quite a bit and my close-up eyesight is not good so I occasionally have a nock break while shooting probably from being damaged.  It's one of the reasons I stick with B-50 string material.  I don't think I have had a broken nock damage a bow. I shoot Mercury speed nocks and for some reason, it does seem that the white nocks become brittle with age.

As sad, and as expensive as it is, equipment failure is a part of archery, whether trad or something else. It doesn't make it any easier to accept, though. I have had a couple of nocks give, but luckily, no damage was done.  I am sorry for your problem.

IF it's man made, regardless of brand, it can and at sometime, likely will fail.

QuoteOriginally posted by buckeyebowhunter:
 http://www.3riversarchery.com/bohning-classic-index-glue-on-arrow-nocks.html  

These are the nocks i use^ And i guess these are the nocks I've always used. But Archie i may doing just that, trying different nocks or maybe goin back to carbons. I guess I'll just be spending more      

have any idea what spine arrows you would need?

Daniel i am currently shooting 2215 eastons I'm not positive but i guess that would end up being a 150 cx heritage which i have some laying around. I did however end up ordering some 2215s with the uni bushing i will likely try those for a while and see how the super nocks hold up. I do appreciate everyone's help and advice. This site always makes me feel better when i lose my cool over equipment issues.

Grab a set of carbons and let your arrow concerns fade off into the distance. I love wood shafts but I got tired of broken nocks, straightening shafts, and tossing shafts that whacked one another.

Don't think I've ever broken a carbon with a trad bow. Shot several straight into cinder blocks and felt bad for the blocks. The arrows just bounce off.

Never had a GT nock or GTO nock blow up on release and I've had like 10 glue on nocks detonate.

I'm going to use up my 1916's on the 3D courses but I'm hunting with Beman Centershot's and after I trash the rest of the aluminums I will just use the Bemans for everything.