Free: Contests & Raffles.
The #4 buckshot will give a much denser pattern than the 00 buck. It's 40 some pellets versus about a dozen. #4 buck is the way to go IMO. I actually use BB's when I hunt with a shotgun, but that's mainly just because I have a lot of them.
I've always been a "T" shot guy for dogs. Though I've been a bit disappointed in the Dead Coyote. I'd go Remington HD "T" if I were using the shotgun for dogs these days.
how would a .410 buckshot 00 (3 pellets) work at 50 yards