RE: Question on spitfires.
I hunt with and have shot quite a few deer with Spitfires. The truth is, they are risky on severe angled shots. I have seen a buck just last year that my friend shot and 1 blade hooked on the hide and opened before fully entering the deer causing a brutal 12 - 14" gash along the outside of the ribs. He ended up killing that deer 1 minute later when it circled back through his area and stopped for a second at a recent scrape. If you saw the wound it left you would have thought that buck would have had some serious problems down the road. The shot he took was a very steep angled shot .. but 1 he put exactly where he was aiming.
My point is that they shouldn' t be used on very steep angle shots. I' ve seen a Magnus fixed and a Muzzy do the same thing on deer and would suggest passing up a very severe angled shot regardless the broadhead.
I can attest to their lethality on broadside shots and slightly quartering.