The Ammo To Go people have been shooting the gel blocks and have added 16 more loads to their already extensive data base.
Click the link and see what they found out. Ignore the complaints in the comments about the terrible negligence in failing to test 25 different manufacturers offerings in such popular(?) calibers as .32 magnum, 9mm Makarov, 44 Magnum and .454 Casul. They do cover the better known ones of .380, 9mm Luger, .40 S&W, and .45ACP.
The latest additions focus on defensive ammo which means hollow points.