I did overstate the velocity of 30-06 - 220 grain. 2,300 - 2,400 IS more like it. I only used a quickie example without trying to be explicit. I prefer the .338 Winchester Magnum over the 30-06.
When I suggested loads for the shotgun I was referring to the big pellets/shot not bird shot. Here's a chart with size, velocity and pellet count.
http://www.unluckyhunter.com/2011/07/choosing-best-buckshot-part-1.htmlPretty impressive velocities. Up over handgun velocities. 1,400 - 1,600 fps! 15 to 50 pellets. One shot is like hitting him all at once with a couple of dozen .22 handguns.