I don't agree with the statement about it being outdated. The law puzzles me, too, though. I hunted in NJ for years, and I always had my first shot a slug, and the next two 00 buck - figuring if a second shot is needed, the deer would probably be on the move. I only started hunting PA last year, and I was surprised that it's slug only here. Good thing I read the game laws book - because in NJ, a buck is defined as at least one antler 3" or longer.
Browning BLR .308
Wicked Ridge Invader HP