i used those sabertooth bullets one year. i got decent 3.5" groups at 100 yards and went with it. But son of a gun! dont carry the rifle barrel pointed down, my bullet fell out of its non holding cup while i was walking and i missed a doe the opening day. Went back to powerbelts that exact day. I'd put a drop of superglue in the base and then stick the bullet back into the lil cup.