OkieCruffler, I never made it clear, but that is what bothers me about the OP's position on what a great defensive tool the .410 is. I don't want first time shotgunners buying his great defensive tool. Even if one becomes very proficient with the .410, I think a larger gauge is more likely to get the job done.
Per AMMUNITION FOR THE SELF-DEFENSE FIREARM by "Anonymous" published by Chuck Hawks at http://www.chuckhawks.com/ammo_by_anonymous.htm
The .410 is only a half-way decent manstopper with slugs . . . There are some odd buckshot loads for the .410 (with three 000 pellets) and I advise you to ignore them. . . .