Hunters and hunting expenditures up significantly
A Census Bureau poll, performed for Fish and WIldlife Service, shows that, over the period 2006-2011, the number of hunters increased 5% and gun, ammo, and archery expenditures increased by 33% This is a sharp reversal or earlier trends downward. This matches my hypothesis that we're seeing a broad cultural turnaround. Americans have historically liked guns, shooting, and hunting. From the 1960s onward, that was reduced. Now (at last, after fifty years) it's returning to the norm.
That's why even the media is going from "gun owners are Neanderthal rednecks out of tune with the modern world and society's needs" to being generally fair, why the courts are open to Second Amendment challenges, and why the antigun groups are faltering. When the cultural battle is being lost, it's harder to win political battles.