Rage shock collars
I'm shooting the Rage Hypodermic through my Barnett Ghost 385. I've been having a problem with the Rage blades opening in flight. I did find High Impact Shock Collars online & ordered some. Until they get here, I've discovered something else that works. I bought some heat shrink tubing, just large enough to slide over the shock collar. I cut off a small section of tubing, slid it onto my bolt, then attached & tuned my Hypodermic. Slid the shrink tube over the shock collar & applied moderate heat. It files great & will not open until it contacts your target. Hope this helps !!!
Lew