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In December 2017 I spent a day recording bullet ricochet sounds using various suppressed rifles and calibers. One of the rifle platforms stood out… The 300 Blackout. The subsonic 7.62x35mm projectile is 4 times as heavy as a .223 round and travels at +/- 1020 feet per second. I was able to place a a Sennheiser MKH8040-ST XY stereo microphone 150 yards downrange and have my armourer carefully shoot bullets near the microphone. The idea was to have the projectiles hit the frozen ground just before and beyond the microphone. Some projectiles hit the soft frozen dirt while others bounced off rough gravel.
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Recorded a suppressed 300 Blackout rifle using Sellier & Bellot Tactical ammunition. This is the first time I’ve used this ammo and I am very happy with the “quiet” results when using a suppressor. This was just a quick test with my Sennheiser MKH8040ST XY microphone rig. First, I stood a meter away from the microphone and recorded multiple shots. I then moved back a couple of meters and faced the microphone in another direction and recorded more.
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