Stuffing a Jutte string inside of a plastic nock probably doesen't help the stress situation, either.
nope, it doesn't. but usually the nocks break on the alumnium, the shaft itself on carbons.
You should have seen my wrist after shooting with the 3" brace height... it was bumpy. didn't hurt a lot.
Funny thing though, self nocks don't seem to break on that particular bow(my old string for the longbow, made it the length of the bow... could only twist so far)
Not even the willow ones.
Even with a 1.5" wide handle on a stiff-handle elm shortbow, with a 5" brace height(and 2" limbs.. I posted about its sister stave) I still break the modern arrows.
Now, with my longbow, it has a copper arrow plate, 5" or so brace height, etc. You know the specs. I still break carbon shafts right above vanes. Nocks are perfectly fine. I have only broken 1 plastic nock on the carbons. I have broken either shaft, nock, or both on almost every alumnium.
All I had for a while was carbon arrows and that bow.