Thanks for the tips. I'm thinking I'll go with a heavier arrow--I'm shooting some pretty light carbon ones right now. Maybe I'll go back to aluminum.

The bow, incidentally, is a Browning Cobra (yeah...I just picked it up cheap while wandering through the gunstore last year), and that's all I know about it. I can't find out when it was made or anything. I have the draw weight set close to the limit, which I estimate to be around 60 pounds, maybe 65.