IIRC, PHC endorsed using a 12 gauge shotgun and buckshot for following up wounded leopards, I don't remember anything about him killing a cape buffalo with a shotgun, just with a spear made out of the leaf spring from a truck. I got the impression, rightly or wrongly, that using a shotgun and buckshot on wounded leopards is a generally accepted practice because of the very close ranges involved and the light construction of a leopard.
The only shotguns that I saw in Botswana were a couple of old 12 bore SxS Greeners that had seen better days (and which could have used a good cleaning) and a Belgian Browning A-5 with a 30" solid rib full choke barrel.
Jeff
