Since receiving my Granddad's shotgun, I've been doing a bit of research on the webs and here about a proper HD ammunition. There seems to be fairly good information that #1 buckshot is a decent way to go. I believe that the standard 2 3/4 shell has 16 pellets of .30 caliber 40 grain. All that said, I'm curious if there is a particular brand that some feel is better than others.