Actually, at point-blank range it is more like being hit with multiple .32ACP's, at best. 00-buckshot has neither the weight, nor the sectional density, of any common pistol bullet. Depending on the delivery vehicle (shotgun, cartridge design, etc) each individual 00 pellet might be little more effective than a .22LR. Lacking significant sectional density, the pellets lose velocity and energy relatively quickly.

I would not want to be on the receiving end of either, but I seriously doubt that I would know the difference between a goose load and a buckshot load when fired within the confines of a large room. Either one would make a serious and bloody mess.

I'll stick with my Federal 2-3/4" Magnum 1-1/4 oz. BB-shot loads for short range defensive use inside the city limits.