Can't speak for others but for me I choose to use a shotgun not because its easier or rifle is too difficult but the fact that hitting a moving target at close range shotgun is more efficient/effective. If it wasn't the trap range would be full of guys using a rifle. If I had to use a rifle approach would be different. A jack most often when flushed will run those 60-80 yards stop and look back to see if its still being pursed. That'll be the time I'd take the shot.