Three Rivers Bunny Busters 5/16 in. 120 gr. 3 pk. H511X 516 3PK. The unique half taper design allows use on tapered or non-tapered shafts. No glue needed. Each Bunny Buster weighs approximately 120 grains and has a 3/4" diameter. Package Contents: Three Rivers Bunny Busters Uses blunt force trauma to quickly dispatch small game like squirrels rabbits and game birds. The unique half taper design allows use on tapered or non-tapered shafts. No glue needed. Each Bunny Buster weighs approximately 120 grains and has a 3/4 diameter.