Ask Ian: Progressive Twist (Gain Twist) in Small Arms?

Cool Forgotten Weapons merch! From Jamie on Utreon: “I know naval gatling guns like the 20mm CIWS uses gain twist rifling, but are or were there any commercial or military small arms that used gain twist rifling?“ Yes, there have been some significant uses of progressive (gain) twist rifling on military and civilian small arms. These include: Colt percussion revolvers (1848, 1849, 1851, 1860, 1861 models) Custom barrels for Sharps, Stevens, and other rifles by Harry Pope Carcano Model 1891 rifles and carbines S&W .460 XVR revolvers There are certainly others, but those are some of the most significant. Contact: Forgotten Weapons 6281 N. Oracle 36270 Tucson, AZ 85740