I recently got my first crossbow and one of the things I needed was a decocking arrow since you can't dryfire a crossbow. So, I bought an Allen brand decocking arrow from walmart that had a rubber tip. Long story short, I shot it into the back yard and the very first shot destroyed the rubber tip. Split it and turned it wrong side out and pushed what was left almost all the way to the fletching. This may not be new news to anyone else, but after talking with a buddy of mine, we got to looking around some of my spent brass and turns out that a 38 and 357 casing slides right over the bolt. Simply use some epoxy in the casing, slide it on and let it dry and your done. The decocking arrow was about $6 and something, but a regular bolt was $4, so if you have a ragged out arrow or want to make your own decocker, is a lot better than that little rubber tip.