I read that. But I am wondering about the performance or non performance of those loads in 4 layer denim. If they don't expand, a wadcutter would actually make a wider wound cavity. Plus, there is the issue of the lesser recoil of a wadcutter allowing more rapid follow-up shots.
The recoil and controlability issue is more of a concern to someone who carries a lighter weight J frame than my full weight 640. If that were the case, I would definitely go with the wadcutters.