The recent ammo scare has got me thinking that maybe something a bit more obscure is in my future. However, most of what I read is "9 vs. 45" or some derivative. Things like "9x25 dillon vs. .45 GAP" don't really come up, although those two might be in a bit of a different class.
Not including the pocket pistol rounds (sized around .380 ACP, .32 ACP, or smaller), what are some of the common uncommon cartridges used in semi-automatic handguns? What I mean is a cartridge that is not one of the big 5 that come up in caliber wars (9x19, .357 sig, .40 S&W, 10mm, .45 ACP), but which has conversion kits currently being produced for common handguns as well as factory ammunition available from at least one reputable manufacturer.
I'm curious to know about the popularity of various options, how they are available (i.e. which company makes a kit for which gun), and what the purpose of the cartridge is (i.e. why it was designed, what it is commonly used for, and why it is good for that use compared to other options). There are some that I know of, but I don't want to spoil my question by answering it before I get to see some responses.
Not including the pocket pistol rounds (sized around .380 ACP, .32 ACP, or smaller), what are some of the common uncommon cartridges used in semi-automatic handguns? What I mean is a cartridge that is not one of the big 5 that come up in caliber wars (9x19, .357 sig, .40 S&W, 10mm, .45 ACP), but which has conversion kits currently being produced for common handguns as well as factory ammunition available from at least one reputable manufacturer.
I'm curious to know about the popularity of various options, how they are available (i.e. which company makes a kit for which gun), and what the purpose of the cartridge is (i.e. why it was designed, what it is commonly used for, and why it is good for that use compared to other options). There are some that I know of, but I don't want to spoil my question by answering it before I get to see some responses.