Grains Grains Grains!
This video demonstrates the audible difference between 115-grain and 158-grain 9mm ammunition when suppressed. Heavier grain weights, like the 158-grain Delta Co. Munitions, are shown to be significantly quieter and maintain subsonic velocity, making them ideal for maximum sound suppression with a suppressor like the Dead Air Primal. Lighter rounds are typically supersonic and produce a distinct crack.









