If you guys are not shooting semi-auto rounds in your SA
With an extra cylinder you don’t know what you are missing. Most of the time the extra cylinders are pretty paper weights. But in odd times they add a wonderful flexibility and add versatility to your shooting. I added a .327 cyl. to my .300 GNR and I can shoot about any .32 round there is, including .32 ACP. About any Ruger .357 can add a 9mm cylinder for a few hundred. Lots cheaper than a whole gun. I can’t explain why a 9mm works out of a .357, it shouldn’t, but it does. Ditto the .45 ACP on the .45 Colt. Nuts like Huey and I have .38-40 and .401 GNR which cheerfully shoot .40 S&W or 10mm. The .40 S&W is one of the most underrated revolver cartridges I’ve ever shot! Taurus is the only one I know seriously tried it in a 2” small revolver. But they tried some goofy extraction system when it only needed full clips.
GNR can make you a custom cylinder hand fitted far beyond what any factory part might be. It’s worth considering for sure!