—the modern day .22 Hornet-—
Out of a pistol, it has the ballistics of a .22 magnum from a rifle.
A friend of mine knew/predicted this development back in the late 90’s. He had gone to Europe to research a book on the CZ 52 that he wrote.
I have a signed copy, somewhere.
He married a Mexican woman, and later moved to Mexico. He carried a Czech Scorpian 7.65x17 machine pistol for personal defense there, because he could. He made connections with the police by doing maintenance on their firearms.
In the U.S., he carried a Glock model 20 10mm.