Not to be a dick about it, but please use the search feature to find "best" shell information.
There are a plenty of 12 ga HD, defense load threads, most all are heated, some are lengthy... and some even have thoughtful, measured and objective posts in them.
"defense load" gave me this:
http://www.thefiringline.com/forums/...archid=3681630
"buckshot" gives you this:
http://www.thefiringline.com/forums/...archid=3681635
"home defense load" rewards you with these:
http://www.thefiringline.com/forums/...archid=3681644
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