Although the books by Lanza and Molina-Orea identify this type of load as an anti-riot or less-lethal cartridge, this is is not correct. In fact, it was just the opposite, because it was made for a weapon/cartridge concept intended to have high velocity, high lethal effect, less recoil and less barrel wear, this last two features supposedly achieved because of the use of smooth-bore barrels. The 9x19 and 9x23 loads were tested in a modified CETME C2 submachine gun.
This loading was experimented in other service calibers like the 7.9x57 and .38 Special, and also in two prototype case types: the 7.62x40 and 7.62x42. Also, this load exists in 7x57, 7.62x51 and 7.65 mm Browning, all undocumented. Most have a single ball, but double and triple loadings also exists. Lastly, only one particular load was indeed conceived as a less-lethal cartridge, but was a .38 Special loaded with rubber balls.