The sole reason for the rise in mechanical broadheads is the speed at which a lot of newer compounds shoot. As with anything high performance, there's a tradeoff, and the tradeoff here is getting that ultra-fast arrow to fly right. Many shooters of these fast bows just flat cannot get a regular broadhead to fly right, even when they go down to 85 grains. Many compound shooters have a speed fetish, and make it the priority of their shooting equipment, even at the expense of mass and broadhead performance.
Using the excuse that they "kill better" is bogus, because for one if you are using a head that has a larger cutting area to make up for your inablilty to place the arrow where it should go in the first place, then you shouldn't be bowhunting period. ANY modern, SHARP fixed blade head will kill any whitetail deer on the planet if YOU can put it where it has to go.
Anything with moving parts has a 100% more likely rate of failure than one without moving parts. Not that they fail all the time, or even infrequently...but the reality is that compared to a fixed blade head, THEY WILL. It's a mathematical reality.
So then.....knowing this, then the ONLY reason anyone would choose to use one, is for the tradeoff of performance, which is fine if that's your choice. The "make a bigger hole" (which they can do....if they open) factor is merely icing on the cake, IF the arrow performs right in the first place.
I've often wondered just WHAT level of failure most mechanical head shooters are willing to accept before they abandon them? One lost deer? Two? Or is speed SO important that some "collateral damage" is acceptable?
Speaking for myself, I shoot the broadhead type I will be using all summer on 3-D targets, and shooting them into dirt banks. If they don't hold up, then I don't use them hunting. That's my "test track". If I shot a deer with a broadhead, and it failed on ANY level, then that'd be the last time I ever used it. My tolerance level is ZERO. That said, that's never happened to me, and I like to think that my "test track" does a pretty good job of weeding out the "weak".
But mechanical head shooters don't do this. They shoot a practice head that doesn't open, simply for the aerodynamics of the CLOSED head, for the bow tuning. Simply put, their "test track" is live animal flesh. I have to also believe that for some of them it would take MORE than one or two lost deer before they even give any thought to the idea that it just might be the head, because arrow speed trumps everything, and they have so much invested in them.
Offer No Apologies.....
NRA Endowment Life Member