Bertfish
Throw bread on me
The cartridge hasn't changed either. The gun will change when the cartridge and projectile change. We're not shooting lasers, phasers, or blasters yet.
I see most modern "new" cartridges as gimmicks.
.357 Sig, .45 GAP, the list goes on. No developments, just a way to sell more bullets/magazines/guns. Answers seeking questions if you will.