It might have been on AT that I first read about this. Practicing on my deer target with bullet tips. When I would pull them from the target, I could hear them rattle. Had to tighten the tips each time before I shot. I ran across about 500 orthodontic rubber bands I used to hold guides on fishing rod blanks. Managed to stretch them with pliers for E clips and slip them on the bullet tip. Snugged them down and Presto! No more loose tips.