RE: what about them NAP spitfires
Spitfires are well made with sharp blades. The fly great and have a good cutting diameter. The only drawback is that they are a litttle slower to open compared to other heads that use O-rings or Rubber bands to hold the blades closed. If you are shooting a well tuned bow with 55ft/lbs or better KE you should have excellent results on deer size game.