This refers to the use of .22 Magnum ammunition loaded to subsonic velocities, typically below 1,125 feet per second, fired through a firearm equipped with a suppressor (also known as a silencer). Subsonic ammunition, when combined with a suppressor, significantly reduces the noise generated upon firing. For example, a rifle firing standard velocity .22 Magnum cartridges produces a loud, sharp report, whereas the same rifle firing subsonic .22 Magnum through a suppressor produces a much quieter sound, often described as a “thud.”
Reduced noise signature offers several advantages. In hunting applications, it minimizes disturbance to the surrounding environment and reduces the risk of hearing damage for the shooter. It can also be beneficial in training scenarios, allowing for practice in noise-sensitive areas. Historically, suppressors have been associated with specialized military and law enforcement operations, but increasing awareness of their hearing protection benefits has broadened their appeal among civilian firearm owners. The development of specifically designed subsonic ammunition enhances suppressor performance by eliminating the supersonic crack, further minimizing noise pollution.
