If you've spent any time around suppressors or quiet range days, you've heard the term "subsonic ammo" thrown around like it's a magic bullet for stealth. It isn't. Subsonic ammunition solves one specific problem — the sonic crack of a bullet breaking the sound barrier — and it comes with real tradeoffs in energy, trajectory, and reliability that every shooter should understand before loading a magazine with it. This guide breaks down what subsonic ammo actually is, whether it holds …