.30 Super Carry, also known as .30 SC, is a rimless tapered pistol cartridge introduced by Federal Premium in early 2022.
Its smaller dimension is conducive to reconsidering existing handgun designs for greater capacity without increasing physical magazine size or decreasing cartridge performance below the perceived adequacy associated with long established alternatives.
[1] David M. Fortier and Michelle Hamilton of Firearms News magazine noted the similarity to the 1918 vintage .30-18 Auto and 7.65x20mm Long cartridge when given an opportunity to test it prior to the 30 Super Carry's official introduction.
[4] Fortier pointed this out to JJ Reich, the Senior Media Relations Manager for Federal Premium.
Ian McCollum of Forgotten Weapons also noted .30 Super Carry is nearly identical to the older French 7.65mm French Long round, although the creators at Federal did not seem to be aware of this and created it independently.