[Myrddin]

Glock 23 is a fine .40 S&W. You can swap a .357 Sig barrel into the slide and use the same magazine. A two for one deal. I acquired a Glock 23C with a replacement Jarvis barrel after the first owner tried to remove a squib with an electric drill. The Jarvis barrel fully supports the case head so you can reload the brass. Normally you don't reload brass fired from a Glock factory barrel as the extra relief of the feed ramp permits the case head to balloon slightly.

[endthematrix]

"Normally you don't reload brass fired from a Glock factory barrel "

That's news to me! I've collected all my brass wanting to reload it someday. What to do?