Id get 6 for deer and 6 for hawgs.. All deep penetrators like G5 Montec, Simmons Landshark, Golden Key Deadhead Slicer, 3Rivers Wensel Woodsman,or the many Magnus heads....These are all one-piece heads.

Remember...Bow weight helps penetration, as does retained kinetic energy in an arrow...But so does broad head design. Gimmicky broadheads with too many blades, knobby ferrules and blunt tips dont typically penetrate all that well on tough animals....Id say the same holds true for expandables with over-flimsy blades and ferrules, questionable blade-locking mechanisms and jackknife actions can create penetration issues