Ammunition designed for the .45 ACP cartridge can be modified for subsonic velocities, typically below 1,125 feet per second. This involves carefully selecting specific bullet weights, usually heavier than standard, and matching them with reduced powder charges. An example would be a 230-grain full metal jacket bullet propelled by a carefully measured amount of a slower-burning powder. This specialized ammunition creates less noise upon firing due to the absence of a supersonic crack.
Reduced-velocity .45 ACP ammunition offers several advantages. The lower muzzle velocity contributes to decreased noise levels, a significant benefit when using suppressors. The heavier bullets often preferred in these loads can also improve terminal ballistics at subsonic speeds. Historically, these types of loads have found use in specialized military and law enforcement applications where suppressed fire is advantageous. Beyond tactical applications, reduced-velocity loads can offer a more comfortable shooting experience with less recoil.
