Glocks are good, but a Smith or Ruger revolver is much more reliable. I ran Glocks in a commercial rental gun range and you may need to watch the mag springs and feed ramps. This is with the 17, 19, 22, 23, and 27. To be honest, round for round, an original '44 Thompson Machine gun was more reliable, as was the MP5, MP5K, Browning High Power, and the champ....Beretta M92. But, back to the point. Ballistics is nothing but a guess. Overpenetration is a strange animal. I would be more worried about the 10 rnds I fired that didn't hit anything than the 2 that hit a target. My round in my above post, gello'd at near 15" of penetration, while separating into 3-5 parts??? In real life it penetrated about 9" and held together stopping just under the outgoing hide, as this was the design of a good SD cartridge(Buffalo Bore .38 Spl, .158 gr, Standard Pressure, LHC-HP, 20-C load, Basically the old FBI load but without the plus P pressures). It took a deer, and provided really delicious sausage, but it did exactly what is was supposed to do. If I had to give an overview, I would suggest Gold Dot to the dedicated auto user as a good blanket load. Glass, sheet rock, heavy clothing, etc. all test out fine to a good bullet for all events, expansion and penetration.