The Wolf ammo is no good for fragmentation. If you want cheap ammo that will fragment, about the cheapest thing out there is some of the M193 spec stuff. Again LC or Q3131A and IMI are the best of these. Due to age, South African would probably be less desirable but still good as long as it fires. Then of course you have the heavier commercial loads such as Winchester Supreme Power Point Plus that does a good job, but is much more expensive.
I would not recommend Wolf ammo for defensive use. Use M193 or some of the other good loads. But of course you can plink with the Wolf and in a bad situation the Wolf would be better than throwing rocks at the burglars I suppose! But find something better for serious use. At least buy a few boxes of the good stuff....keep the Wolf for plinkin and back-up ammo.