stainless steel PowerHead is .223 caliber. This PowerHead has the
distinction of being the first PowerHead in Beco's Product line.
Because of it's lite weight, it is one of the most powerful PowerHeads
in our line and actually more powerful than the .357 PowerHead and
comparable to the .44Mag Powerhead. This model is designed to fit
over a tri-cut or double-barb spear tip point that has a 7/16"
outside diameter. Bushings are available to utilize a 3/8" or
5/16" diameter sper shaft. The barrel of the PowerHead is
interchangable with the .357 PowerHead. To waterproof the shell,
the manufacturer suggests using fingernail polish around the primer and
also where the bullet presses into the casing.