Forget the "Bushmaster" for a moment...

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19. only nine of them

and usually pretty close together as any shotgun you would hunt a deer with would have tight choke (at least ideally.) comparing a shotgun to a bushmaster in terms of lethality doesn't fly. most semi-auto shotguns that are used by hunters have very low magazine capacity (mainly for game management purposes, but nevertherless.) not to metion the veryy limited relative range. i am no gun nut, but i do know a little about shotguns since i used to hunt quail, duck, geese, etc. with my father - but haven't since he passed away. i know you can point to some goofy ass gun show shotgun with a million round drum or something, so spare me the picture.