Originally Posted by hunt12ga

A family member passed along an old PSE Copperhead when he upgraded. He told me that he had recently replaced the string. After a couple days of shooting, I was very pleased with how consistently it shot, and my 10 yr-old son was stacking shots at 30y. I was planning to let him hunt with it his fall. We were using 20" carbon arrows and 100gr field points.
While shooting one day, I fired and the cables busted. The arrow flew perfectly and struck its intended point, so I'm assuming the nock didn't jump the string. The cables had broke right where they exit the cam slot. Fast forward 2 weeks, I had purchased and installed new cables (they come with new cams) and it was still dead-on the bullseye. I shot maybe 30 rounds over the course of a couple days, and my daughter shot it a few times. Once again, when fired, the cables busted at the cams. And once again, I know the arrow didn't jump the string because it flew true and struck the bullseye.
This time, not only the cables busted, but also one of the spacers that the cable loops ride on.
Thinking it may be a wrong string, I checked online and PSE calls for a 17 1/2" string, and the one my cousin had installed was 18" outside-to-outside. Is this enough to cause the problem? Anybody have any ideas? Id love to get this shooting again because it shot so well, but I hate the idea of buying cables and a new string just to have it happen again.
Thanks for any input- rw