I understand we might be talking about a slightly different gun, but this I believe this is relevant to the discussion
Taken from The Gun Digest Book of Combat Handgunnery by Massad Ayoob:
Pg. 32
Model 340 Sc Scandium
"Chambered for .357 Magnum, this gun manages not to tear up the FBI load in the gun's chambers, but doesn't shoot it worth a damn for accuracy. Admittedly, this isn't the most accurate .38 Special cartridge made, but the load gives me about 5 inches at 25 yards in my Airweight, versus 15 inches of what I can only call spray out of this gun, with bullets showing signs of beginning to keyhole. This gun also shot way low. Recoil with Magnum loads was nothing less than savage. The little Scandium beast was somewhat more accurate with other rounds, but not impressively so. After five rounds, the hands were giving off that tingling sensation that says to the brain, "WARNING! POTENTIAL NERVE DAMAGE." When passed among several people who shoot .44 Magnum and .480 Ruger revolvers for fun, the response was invariably, "Those five shots were enough, thanks." I didn't even try to shoot a 50-shot qualification with it. Unloaded weight is 12.0 ounces."
Ayoob continues on pg 33
"The thin steel barrel sleeves of the Ti and Sc guns just don't seem to deliver the accuracy of the all-steel barrels of the Airweight and all steel models. All four guns [he was comparing Centennials of steel, Airweight, Ti, and Sc] are DAO, so it wasn't the trigger. The same relatively deteriorating accuracy was seen in the super-lights with mild .38 wadcutter ammo and big Pachmayr grips, so it wasn't the recoil. To what degree this is important to you is a decision only you can make.
Now let's put all that in perspectives. In the 1950's when all this ultra-light gun stuff started, Jeff Cooper defined this genre as meant to be "carried much and shot seldom." Alas, the days when we can do that are over, atleast in law enforcement. Any gun that we carry on the job is a gun we are required to qualify with repeatedly. As I look at my 340 Sc and 342 AirLite Ti, it occurs to me that if I'm deliberately going to do something that hurts like hell, I should go to Mistress Fifi's Hous of Pain and at least get an orgasm out of the deal."
Massad shows pictures on pg 34. These are the captions
"Here's what happens when you use full-power lead bullets in a Ti or Sc S&W. Inertia from the violent recoil pulled the bullet nose of the 158-grain Magnum forward, "prairie-dogging" out of the chamber preventing rotation"
"The model 340 Sc jammed after the third shot. Note how the bullets of Remington 158-grain SWC .357 cartridges have pulled forward from recoil inertia"
Worthless without the pics, but you get the idea.
FWIW, with the Sc guns you are only saving 3 oz or so. For the money and potential unshootability (think Colbert's truthiness), I'd say those extra hundreds of dollars would be wasted as opposed to getting a 442 or 642