Thread: Subsonic 300BLK Noise levels

A .22 LR rifle with sub sonic ammo with a good suppressor wíll be c. 110-113 dB measured 1 m of the of the muzzle.

We are actually working on our .300 BLK specific model ( work more related to bullet channel size and optimum size vs. performance than other characteristics )

Quietest levels so far in our testing in .300 BLK with sub sonic ammo have been in the range of c. 130-132 dB with a 10-12" AR15 type rifle, 1 m left of the muzzle.

Levels at the shooters ear will be varying, due to the ejection port noise for example.

Figures from elsewhere that I would trust, measured with the right equipment indicate levels of c. 127-132 dB for sub sonic .300 BLK AR15 type rifle at 1 m left of the muzzle.

Best Regards!

Tuukka Jokinen
Ase Utra sound suppressors