scn said:
The turkey gun craze is primarily the result of great marketing!
x 2
Add the super-tight choke tube craze to that as well.
I do appreciate the better shotgun shells available now, even if they are are also of little relevance at the ranges most turkeys are actually killed. The main advantage I've obtained from a "dedicated" turkey gun has simply been the ease of mounting an optical sight, which to me is of far more value than the gun itself.
IMO, most any factory full choke coupled with some #7 heavier-than-lead loads can make an excellent turkey gun, even in 20 gauge out to 40 yards or so.
In times past, I used to turkey hunt with the same #5 & #6 lead loads I used for squirrels, using my favorite shotguns that I simply used for anything and everything from dove to ducks, squirrels and turkeys. And those turkeys I killed with my Browning Sweet 16 "dedicated" quail gun never knew what hit them.

Honestly, don't think I ever failed to walk out with every bird I shot at with that Sweet 16.
What any of us need most is patience. The gun in hand usually matters little.