I don't like Glocks for carry. I don't like "safe action" triggers.
Aside from the alure of saying .357 mag (which you will most certainly use a .38+p) but will acheive 420-430 LBS at muzzle, the .40 from a Glock (450 LBS at muzzle of the glock), coupled with the larger surface area of impact, the .40 is the superior choice within those configurations.
Unburned powder flying from the end of a 2" barrel does nothing to help trajectory of the .357 mag ballistics.
Good luck!
My 140 grain Speer load in front of 17 grains of Alliant 2400 produces 1332 fps/551 ft lbs and is quite controllable in the SP101 2.3" gun. I don't like Glocks, I do like revolvers, therefore I ain't buyin' no Glocks. I believe, as with ugaarguy, that I could draw and double tap a target at 7 yards with the revolver just as fast as I could the Glock and probably faster because I can point shoot the revolver better than any autoloader, much less a Glock. All I really need do is bring it up high enough to reference the front sight and start shooting, practice doing that all the time and keeping 'em in the boiler room. I even hit pretty well dim light with the revolver when I can't see the sight and tend to hit low with autoloaders.
Would I want to take on the MS13 gang with a revolver? No, but then, I don't wanna take on the MS13 gang with a glock, either. Presented with multiple targets like in a
GAME like IPSC, you'd be dead anyway after a couple of rounds. You'd take out one, maybe two, even if you're an IPSC master class shooter, but if you don't find some cover ASAP and have some distance, there is no way you're going to shoot fast enough to take on five armed attackers in the open at 7 to 15 yards. You're going to get shot trying. Self defense is about tactics. You just don't stand there shooting and reloading. You have to use tactics. If I run out of rounds in my revolver and I'm still alive, I know I'll be behind cover by then. I can hopefully pull my little NAA mini in a pinch and keep their heads down long enough to toss in a speedloader full. I say "hopefully" because there are no guarantees in a gun fight.
Yeah, you could have multiple attackers, but most of what I worry about is a common mugger, car jacker, what ever. One or two guys and I have a chance of coming out on top with my revolver. I shoot it well enough. When I'm in high risk areas, the big city, I normally have a 9mm high cap back up in a pocket anyway to back up the magnum.
Yeah, I like the word magnum. It means power. And, 551 ft lbs out of a 2.3" barrel STILL trumps your .40 a LITTLE bit. It ain't the hammer of Thor, but it beats the 9 for the first five shots. If I need more when that MS13 gang is after me and I'm behind cover, I can draw the 9 for 11 more shots. Normally around here, heck, I just carry a .38 revolver or the 9 in a pocket and don't worry a lot about IPSC shooting scenarios. I live in a rural town of 12K, the county seat and largest "city". When we run to Corpus or Houston, I'll carry the revolver with the 9 as a back up. That way, I've got a speedloader and speed strip in the pocket for the revolver and my double mag pouch with two more 10 round mags for the 9. I think I'm armed enough, frankly. ROFLMAO! Then, there's ALWAYS the little NAA regardless if I'm in the big city or not.
Anyway, I don't get all wrapped up in game scenarios. I have shot a lot of competition, IDPA, not IPSC, but I don't take it that seriously. To me, it's good marksmanship practice, but would such things happen that way in real life? I mean, I'm facing three armed men "el presidente" style and I'm not going to get shot as I put TWO into each one, one at a time? Yeah, right. I'll put ONE in each one and come back and finish off the rest IF I don't get killed first and assuming I can't FIRST dive for some kind of cover before I start shooting. I ain't gonna stand there like an idiot full profile while shooting and reloading. I'm at LEAST going to fall to the ground shooting and try to present a smaller, moving target. I'll make every effort to get to cover before shooting, though.