Answer
Jan 29, 2026 - 02:37 PM
Yes, a 147 grain 9mm round is generally quieter than lighter 9mm rounds, like the 115 or 124 grain, primarily because it is subsonic, meaning it travels below the speed of sound. This reduces the crack associated with the bullet breaking the sound barrier, making it a popular choice for use with suppressors. However, the actual perceived noise can still vary depending on the firearm, environment, and other factors.
