Always fixed. (never fail and can survive the rigors of the launch and hit without breaking and they are always open meaning they don't fail to deploy) For the crossbow guys that I set up that are married to a particular head (usually 100 grain) I swap out the alum. Inserts in their bolts and replace with brass to boost the FOC. I set up two guys with the same Killer Instinct crossbows. One was willing to listen and let me put brass inserts in his bolts. The other guy was chasing speed. Both wanted to use Slick Trick (Great crossbow head). Both setups were the same with the exception of the brass inserts in one.

The guy who chased speed could not group consistently passed 30 yards. The heavier FOC guys was driving tacks at 60 yards. Weight forward in bolts is a great thing and so is the added momentum.

Member Wisconsin Bowhunters Assc, Wisconsin Traditional archers, Pope and Young, Asbhy 100,