I think it should be noted that none of these ads imply that you'll make a 60-80yd shot on every attempt, only that such shooting was possible. Anybody can make an ocassional lucky shot; heck yours truly once rolled a running cottontail at more than 80 yards with a 20-bore Parker and improved cylinder choke.
The bunny was being chased across an open field; and the shot was taken out of frustration, as the dogs had been running this old veteran for more than 3 hours in thick broomsedge, and it never presented a shot. I held the muzzles high, swung way out in front, and the bunny begin to tumble what seems liked 3 seconds after the shot; but one #6 pellet hit the kidney area, grazed the spine, and stopped under the skin on the off side. It was a nothing but a lucky peller strike, and one I couldn't duplicate in a 100 attempts. But before totally dismissing the long-range capability of big magnum 10's and 12's, read Elmer Keith's book. This guy was fortunate in that he was privileged to shoot train car loads of shotshells in a wide variety of guns and field conditions and he learned how to consistently hit waterfowl at long range. In my opinion, our guns are capable of much more that most of us have ability; an ability that can only be developed by having the luxury of time, opportunity, and enough ammo.