Glock 31/32 357SIG Barrel Support???

[The Sarge]

I have heard that the Glock 357SIG barrels have much better supported chambers than the 40cal models. For those that have them, is this true? Thanks-Bill.

[DonGlock26]

Glock engineers actually took advantage of this bottlenecked cartridge when they engineered their .357 Glocks (M31, M32, & M33). As a result, the Glock .357 barrels have a fairly tight chamber and a well supported chamber in the 6 o'clock position.
7. You get another advantage with the bottlenecked 357 SIG cartridge. The velocity spreads can often be less than 20 fps, which is quite excellent.


http://glockmeister.com/357sig.shtml