I'm thinking of switching to Federal Hydra-Shok 135 gr. low recoil ammo for use in my G27. While I don't like the ballistics as much as HST, there's this to consider: a .22 to the head beats a .45 to the arm. That being said, I can get much better shot placements with 135 out of a sub-compact when doing rapid fire. That, and I already have a box of it lying around.