I, too, have a Colt Magnum Carry .357 two-inch. Having tried other handles on it, the original Hogue rubbers are by far the best when it comes to performance.
In response to the velocity question, I recall my Speer 158gr Gold Dots departing at just about 1100fps from the MC. That's a lot.
I once challenged a serious Glock 17-shooting cohort to an impromptu IDPA match that we arranged to be six-shot neutral. (Twelve- or six-shot setups, mostly, so that the number of reloads was equal.) Since it was IDPA, I shot +P .38s, 158s at 820. Hey, it's a game.
Astonishingly, I actually beat him by a small margin, which made it my best day ever with a snub.
I actually did a no movement five-yard "Bill Drill" (still hate that name) out of the holster, 2.61 seconds, down one (point, in the IDPA parlance).
Way the best snub-shooting I'll ever, ever do.
I'm pretty crazy about snubs. I have a lot, mostly Colts. I shoot them a lot, and practice pretty hard. I have an older Detective Special that truly deserves the description "awesome". Fifty-yard ringers are not safe when it's around.
BUT!
I've never bothered carrying the Magnum Carry (when I'm in carry-legal places, of course). The flash and blast are indeed incredible. The joke about knocking the bad guy senseless has a bit of truth to it.
Here's what I know, by actually testing myself:
If I do a six-shot IDPA-style scenario or drill with both the MC and a Kahr MK40, I will do far better with the Kahr. Not so much faster, as my time will be only moderately better. But the hits will be much better.
Hits count. Plus, the Kahr's a .40 cal, and I do prefer bigger bullets as having a better chance of getting somewhere and doing something.
Yeah, I know this is the Revolver Forum. And really, more than half of my short guns are sixguns. I shoot them a real lot, including in competition (USPSA, IPDA, steel). Competition isn't a fight, but it's stressful and so offers a taste of pressure-testing.
I can't touch my 1911 scores with any sixgun, and I can't touch my Kahr scores with my Magnum Carry.
Believe me, it hurts to type that. Bad.
Bill (Not the drill)