I just had to post this. I've got a single shot 20 gauge shot gun that I got for $100 brand new. I like it alot, it was my first shot gun.
My point is this.
It can be turned from a Nice clay and small game hunting shooter, into a one shot, huge animal killer, general body armor defeater, cover blower, by simply adding a rifled slug.
I need to shoot more slugs!