Not sure if this is the right forum for this discussion; if not, moderator please move to proper location. For years I carried a G27 in a Galco Ultimate Second Amendment with Federal HST 180-grain hollow points. Over the last 7-9 years I've transitioned (along with lots of other folks) to 9mm and still carry HSTs, but in the 124-grain standard pressure loadings. A few weeks ago I bought an old LEO gun from a friend who retired in about 2016 after 20 years with a major metropolitan police department. He sold me his Gen 2 G23 for $250 with three 13-round magazines. I'm like a pig in a wallow topped with frosting and cherry. My goal was to have less money invested in a home defense gun that could also be used for early morning or late evening walks around our (very) safe planned community. This weapon certainly meets that criteria. I've got it packed with Federal HST 180-grain loads. I place a certain amount of trust in the Lucky Gunner ballistic gel tests which have recorded 18.5" of penetration and .72" of very uniform expansion from a G27 with a barrel length of 3.42" through four layers of cloth. So, now I'm wondering what difference it might make shooting that same bullet from a G23 with a barrel that's 4.02" long. Also, where I live, it's typically shirtsleeve and shorts weather, so I probably won't run into four layers of fabric. Any suggestions or input on the terminal performance of this combination? Thanks for your experience.