The IWBA is now a long defunct organization. Here's the link that the so called "Firearms Tactical" pages gives. http://www.iwba.com/
I don't listen to those who pontificate the virtues of shooting blobs of jello and then have them tell us which loads are "best" to use to fend off human attackers, who most definately are not made up of blocks of chilled ballistic gel that are callibrated with a .177 steel BB shot from a BB gun before applying some "IWBA Approved" bullets into the tissues of someone who's wanting to maim or kill me!
As stated before, if you have a better source of information, feel free to share. Your post adds nothing to the discussion except your opinion, and even that lacks support.