there are many new/ old choices of ammo for SD/ EDC. was looking last night @ a 40 cal./ full copper bullet/ w/ a spirel bullet. my 2 cts, Federal/ Hydra Shok/ 165 gr., several years ago i was shooting @ knock down 15 yd, steel 1/2" ; 6"x4" plates. the hydra shok's did slam down w/ a loud noise/ force. noticed the plates had mushroomed inprints on the plates, the center insert also marked clearly on the faceplate. the hydra shok's also come in several other calibers.