Suppressor sound tests / .300 Blackout / .300 Blackout subsonic, 16" bolt-action rifle

.300 Blackout subsonic, 16" bolt-action rifle2025

84 suppressors were fired on this same gun, with the same ammunition. Fired with no suppressor at all, it measured 149.7 dB, which is what each reduction below is counted from.

The bar above the list places each of the 84 suppressors fired on this gun by how loud the shot still measured at the shooter's ear. Between the quietest and the loudest there is 25 dB. It stays on screen as you read, so hovering a row shows where that suppressor falls.

The shaded band is the tightest 1.9 dB stretch of this strip, holding 16 of the 84 suppressors tested, which this test cannot tell apart from one another. It is a sample rather than a special group, so sweep the strip and the band follows. No 1.9 dB stretch of this strip holds more of them than that, so the field really is spread out: on this gun, which suppressor you fit changes how loud the shot is.

Hover a row or drag the bar
quieter 114 dB139 dB louder
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SuppressorAt the ear
  1. CAT BBK A1115.9 dB
    16.9 oz · 10"
    33.8 dB quieter than unsuppressed
  2. Fox Creek Arms FX 338XL Ti116.0 dB
    17.6 oz · 10.25"
    33.7 dB quieter than unsuppressed
  3. CAT JL A1116.4 dB
    14.4 oz · 8.88"
    33.3 dB quieter than unsuppressed
  4. KAC 762 HUB Proto117.5 dB
    16.8 oz · 8.88"
    32.2 dB quieter than unsuppressed
  5. FPM Gunworks Dirty Dacshund120.5 dB
    18.5 oz · 8.13"
    29.2 dB quieter than unsuppressed
  6. Guardian Defense GDM 30L121.1 dB
    18.7 oz · 9.88"
    28.6 dB quieter than unsuppressed
  7. Elite Iron Thud Lite L122.7 dB
    17.7 oz · 8.63"
    27.0 dB quieter than unsuppressed
  8. FPM Gunworks Mini DD123.2 dB
    9.6 oz · 6.63"
    26.5 dB quieter than unsuppressed
  9. Faxon Firearms Sentry 30124.1 dB
    16.9 oz · 7.13"
    25.6 dB quieter than unsuppressed
  10. Guardian Defense GDM 30M125.0 dB
    16.1 oz · 8.38"
    24.7 dB quieter than unsuppressed
  11. G3 Defense MK7125.2 dB
    12.1 oz · 7"
    24.5 dB quieter than unsuppressed
  12. Faxon Firearms Sentry 36125.5 dB
    16.8 oz · 7.13"
    24.2 dB quieter than unsuppressed
  13. CAT ODB A1 716125.8 dB
    24.3 oz · 7.5"
    23.9 dB quieter than unsuppressed
  14. Otter Creek Labs Infinity Solid Endcap125.8 dB
    22.9 oz · 7"
    23.9 dB quieter than unsuppressed
  15. Elite Iron Tantrum X with Extension126.1 dB
    16.2 oz · 8"
    23.6 dB quieter than unsuppressed
  16. Guardian Defense GDM 30K127.1 dB
    13.1 oz · 6.88"
    22.6 dB quieter than unsuppressed
  17. Guardian Defense GDM 762127.8 dB
    10.8 oz · 6.5"
    21.9 dB quieter than unsuppressed
  18. BOSS Silencers Chairman TIK128.0 dB
    10.8 oz · 6"
    21.7 dB quieter than unsuppressed
  19. Rugged Axial 7128.1 dB
    21 oz · 7.25"
    21.6 dB quieter than unsuppressed
  20. FPM Gunworks Nein128.4 dB
    10.7 oz · 7.25"
    21.3 dB quieter than unsuppressed
  21. APRS Big Dipper131.0 dB
    14.4 oz · 9"
    18.7 dB quieter than unsuppressed
  22. ECCO Machine Five Ti 30133.1 dB
    7.4 oz · 5.2"
    16.6 dB quieter than unsuppressed
  23. B&T VERS36XM with Module133.8 dB
    12.5 oz · 7.13"
    15.9 dB quieter than unsuppressed
  24. Centurion Arms Maximus L 30K134.3 dB
    14.7 oz · 6.38"
    15.4 dB quieter than unsuppressed
  25. Elite Iron Tantrum134.7 dB
    10.3 oz · 5"
    15.0 dB quieter than unsuppressed

Products come and go from these events voluntarily. A suppressor missing from this list was not tested, nothing more. Names are shown as Thunder Beast listed them. A name without a link doesn’t have a page on Baffled yet. Differences smaller than 1.9 dB are closer than this test can reliably measure. The results also don’t record which mount or muzzle device each suppressor was fitted with, and that hardware can affect both the reading and the weight and length shown above. Decibels are not a count of anything: as a rule of thumb every 10 dB is roughly a halving of how loud something seems, so the gaps here are larger than they look.

Every row opens to show all three microphones, and it is worth opening. A suppressor can be the quietest here beside the muzzle and middling at the shooter’s ear, so a claim about one says nothing about the other.

Thunder Beast published the decibel figures, the weights and the lengths. The resolution limit of 1.9 dB, the shaded band, and the 149.7 dB unsuppressed figure are worked out here from those measurements.

Data from the 2025 SILENCER SUMMIT, published by Thunder Beast Arms Corp. See their results