The .22 K Hornet is a wildcat cartridge derived from the .22 Hornet by fireforming its case to have a sharper shoulder and a straighter body, increasing its powder capacity. This modification results in higher velocity and improved accuracy compared to the standard .22 Hornet. It typically fires bullets in the 40 to 55-grain range at velocities around 2,800 to 3,000 feet per second.
The .22 K Hornet is popular among varmint hunters and target shooters who appreciate its flat trajectory, low recoil, and greater performance relative to the original .22 Hornet cartridge. It excels in small game hunting and pest control, offering excellent precision and sufficient power for these applications.
Being a wildcat cartridge, it is not commercially produced, so users often need to handload their own ammunition.