In our Wyoming camp over the past 30 odd years we have used dozens of different vintage heads for testing on deer and antelope carcasses.
After consuming the proper amount of aiming fluid in the evenings around camp fire, we have conducted our non-scientific penetration tests with dozens of vintage heads such as Geronimos, Mohawks, Ropers, Rippers, Case, Bowfin, G.J. Dye, Browning Serpentine, Fang, Gus Adkins, etc. These are always educational endeavors.
For hunting, depending on the animal and terrain, I use either vintage Zwickeys or Vintage Bear Razorheads.
For Bear Razorheads, I use is the collectible 1955 Pinned Bear Insert.