I don't think the B-50 was the culprit. 450+ is made from Dyneema and Vectran--dacron shouldn't be able to damage it. That is akin to lead cutting steel.
I've tied on silencers using dacron, Dyneema, dental floss, etc. etc. etc. One seems to work as well as the other, but the last few years I've mainly used 62 Braid or 62XS serving material (it's convenient).
For a 20 fps difference it would normally take a LOT of silencer material--a lot more than should be needed for any bow. More isn't always better. Properly installed, cat whiskers will work as well as any silencer and the weight/speed difference is negligable.
Back to the point--I'm not trying to convince anyone to change over to cat whiskers, just that the tied-on cat whiskers alone are not what caused that string to wear. Could be the way they were installed, could be the way the string was made, could have been faulty string material, or several other things--or a combination of a few things.
Has anyone else seen anything like this before? I've seen some weird things happen with strings, but this one is a first for me.
I'm going to ask Ray Browne at BCY what he thinks could have happened.
Chad