![]() The echo and the crack follow the bullet. ![]() You can hear the sonic boom travel downrange.This becomes extremely apparent when you take the exact same round and find that it’s supersonic in your 7.72″ bbl CZ Scorpion Evo and subsonic through a 4.5″ bbl pistol. However, many calibers and brands of ammo achieve subsonic velocity by simply using a heavier projectile that doesn’t go as fast even with the same power and pressure behind it. 22 LR brands - that subsonic ammo and supersonic ammo are loaded to entirely different power specs. It is true in many cases - for example.While the sub/super difference is massive in the 597, both ammo brands stay subsonic in the short pistol barrel and the two are completely indistinguishable from each other. 22 LR rifle is fired through the Walther PPQ. In the video, the exact same ammo shot through the Remington 597 HB.In real life, the difference is even more pronounced than in the video.Īs I have seen many comments on other videos and elsewhere online suggesting that the difference is actually due mostly to the higher power and pressure of supersonic loads: In a lot of calibers it’s actually uncomfortable to shoot supersonic ammo without ear protection, whereas a subsonic load with the same powder charge can be barely noisier than the sound of the action cycling. While my camera in this configuration won’t dampen or scale down audio after a volume spike, the sonic boom absolutely maxes it out. The truth is microphones on cell phones and videos cameras max out between 90 and 110 dB.
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