I got an idea. How about letting some of those mature ones walk to pass on their proven genes and filling your buck tag with a forkie... one that might not have decent genetics and might still be a forkie five years from now?
This 'shoot only mature bucks' stuff just doesn't make any sense to me at all. No other predator in the whole world chooses to take only the prime stock out of a herd. They always take the young, weak and sick. That's nature's way of making the herd stronger and improving the genetics of the species.
Man is a different predator because our species has something no other predator has. Ego. In my opinion, this QDM stuff is entirely ego driven. A minority of hunters wanting to make it easier to massage their ego with big racks hanging on their wall.
Not that I'm criticizing my fellow hunters, you understand...

That's just the way I see it.
Horns or slickhead, big, little or in between doesn't make a bit of difference. If it's legal, and if it's an animal I want, I'm shooting. QDM...[:'(]