Any Revolvers in 357 Sig Caliber

None that I'm aware of. Don't really expect any either. First of all, what would it give you, a round designed to approach .357 Mag ballistics in a semi chambered in a revolver. Which is already available in the .357 Mag. Add to this the inherent problems, or at least potential problems, with shouldered cases in revolvers and you have something that probably wouldn't generate enough market interest to encourage any maker to develop it.
 
IMHO, it would be like a revolver chambered in 45ACP when you can just as easily shoot 45LC for better performance except that 45ACP is a more abundant ammo than 357 sig, depending on where you live.
 
As 627 noted, shouldered cases run into problems in revolver cylinders.

The greater the shoulder angle, or the higher the pressure, the more liklihood there is that the casing will try to back out when the gun is fired and lock the cylinder up.

S&W found that out in the 1960s with the Model 53 in .22 Jet. The chambers and cartridges had to be kept absolutely free of oil, or the cylinder would lock up when the gun was fired.

Even if the chambers were cleaned with lighter fluid or another degreaser, as was recommended, it was not at all a sure thing that the gun would continue to function.

This problem would likely be even more pronounced with .357 Sig, due to the Sig's high operating pressure, and short, sharp neck contour. The .22 Jet had a pretty long, sloping neck contour.

One sure fire way to help solve this problem is to reduce the ballistics of the round being fired. But why would you do this? Then you'd have essentially a rimless, bottlenecked .38 Spl.
 
You could always have one made by rebarrelling a S&W 610 (or any N-frame for that matter) and getting a blank cylinder reamed in .357 SIG.
 
Seems like an awful lot of money and effort to create a gun that likely won't function more than 1 or 2 shots without application of a rawhide mallet.
 
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