The .204 Ruger is a high-velocity, low-recoil centerfire rifle cartridge introduced in 2004 by Hornady and Ruger. [1, 2]
 
Key Specifications & Performance
Velocity: Muzzle velocities exceed 4,000 feet per second (fps) for 32-grain bullets and can reach up to 4,225 fps for lighter loads. [1, 2, 3]
Trajectory: Extremely flat-shooting, rivaling the trajectory of a .22-250 Remington while using less powder and generating significantly less heat and recoil. [1, 2]
Recoil: Minimal recoil (comparable to a .22 Magnum or light rimfire), which allows shooters to easily track their own bullet impact through a scope. [1, 2, 3]