This may be a bit off the thread's track, but I just bought a used Blacktail Snakebit and read an interesting theory in the Blacktail literature.
They advised new archers use B-50 on their bows. The theory is that new archers will experience numerous dry fires while learning. A dry fire will (supposedly) not hurt a Blacktail with a B-50 string, but will lead to premature failure with a FF string. I can see where the stretch inherent to Dacron strings might lessen the shock of one.
They also recommend upgrading to a FF string once one achieves mastery of bow shooting for better performance.
This thing shoots so nicely with the heavy string on it that I may just leave it alone. It's only 38#, so will not be my hunting bow anyway and I don't really care how much penetration I get in foam. On the other hand, it's pretty darned quick and it may be fun to see what it can do with a high performance string
I have SBD 8-strands on nearly all my other bows. Might have to try one here too. Or maybe try some BCY-X this time.