I've been loading mine in the mid 1100's fps. Mild compared to many of the "magnum" and "hunting" loads.
Right in line for all the managed recoil and TAP LEO Hornady loads though.
I prefer the slower stuff for 2 main reasons.
1. Less muzzle rise, faster and more accurate follow up shots if necessary.
2. I doubt that anyone standing on the wrong end of it would be able to tell you that there was a difference between it and some other buckshot shell.
My humble opinion, nine .32'ish caliber bullets hitting someone at more than the speed of sound, is going to make a really bad day regardless.
If outside, these are for 50 yards or less shots (like my property for instance). They perform fine at those distances and if indoors, don't really even leave the wad in that close proximity. So, it would be more like getting hit with a slug that fragments.