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About LinkBacksDownload a Decibel Meter App to your phone and measure the noise in dB using a subsonic .22 as your control or baseline.
Try and chronograph your loads to ensure the Muzzle Velocity is consistently less than 1080 feet per second so you know the projectiles are not going supersonic.
I like to try for around 1050 FPS average just to be sure.
Cheers
Pete
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Thread: Subsonic 300BLK Noise levels
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24-01-2016, 03:14 PM #11Member
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