Suppressor sound tests / .300 Win Mag / .300 Win Mag, 26" bolt-action rifle

.300 Win Mag, 26" bolt-action rifle2025

68 suppressors were fired on this same gun, on the same day, with the same ammunition. Fired with no suppressor at all, it measured 157.1 dB, which is what each reduction below is counted from.

The bar above the list places each of the 68 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 26 dB. It stays on screen as you read, so hovering a row shows where that suppressor falls.

The shaded band is the tightest 1.76 dB stretch of this strip, holding 14 of the 68 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 1.76 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 125 dB151 dB louder
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SuppressorAt the ear
  1. B&T TiRe-X with OTB126.1 dB
    17.6 oz · 10.63"
    31.0 dB quieter than unsuppressed
  2. FCA FX 338XL-TI126.8 dB
    17.5 oz · 10.25"
    30.3 dB quieter than unsuppressed
  3. Otter Creek Labs Infinity Superset with Extension127.8 dB
    17.4 oz · 9.75"
    29.3 dB quieter than unsuppressed
  4. GDM GDM 30L129.3 dB
    18.7 oz · 9.88"
    27.8 dB quieter than unsuppressed
  5. ECCO Accipiter 8in129.8 dB
    14.1 oz · 8.38"
    27.3 dB quieter than unsuppressed
  6. Knight's Armament Co 762 HUB Proto129.9 dB
    16.8 oz · 9"
    27.3 dB quieter than unsuppressed
  7. CAT BBK A1131.3 dB
    16.9 oz · 10"
    25.8 dB quieter than unsuppressed
  8. GDM GDM 30M131.8 dB
    16.1 oz · 8.38"
    25.3 dB quieter than unsuppressed
  9. G3 Defense MK7131.9 dB
    12.1 oz · 7"
    25.3 dB quieter than unsuppressed
  10. FPM Dirty Dacschund131.9 dB
    18.5 oz · 8.13"
    25.2 dB quieter than unsuppressed
  11. Elite Iron Thud Lite L133.3 dB
    19.7 oz · 8.75"
    23.9 dB quieter than unsuppressed
  12. Faxon Firearms Sentry 30134.1 dB
    16.9 oz · 7.13"
    23.0 dB quieter than unsuppressed
  13. FPM Mini DD134.1 dB
    9.6 oz · 6.63"
    23.0 dB quieter than unsuppressed
  14. Wraith Metalworks Socom 30135.0 dB
    20.2 oz · 9"
    22.2 dB quieter than unsuppressed
  15. B&T VERS36SM with Module135.2 dB
    12.5 oz · 7.13"
    21.9 dB quieter than unsuppressed
  16. BOSS Chairman TIK135.8 dB
    10.8 oz · 6"
    21.4 dB quieter than unsuppressed
  17. Faxon Firearms Sentry 36135.9 dB
    16.8 oz · 7.13"
    21.2 dB quieter than unsuppressed
  18. Knight's Armament Co 762 DTS-1.1136.1 dB
    17.7 oz · 8.25"
    21.0 dB quieter than unsuppressed
  19. APRS Big Dipper136.6 dB
    14.4 oz · 9"
    20.6 dB quieter than unsuppressed
  20. Elite Iron Tantrum X141.5 dB
    11.4 oz · 5.5"
    15.7 dB quieter than unsuppressed
  21. Elite Iron Tantrum143.8 dB
    10.4 oz · 5"
    13.3 dB quieter than unsuppressed
  22. Abel Theorem S with Brake150.9 dB
    12 oz · 7.25"
    6.2 dB quieter than unsuppressed

Products come and go from these events voluntarily. A suppressor missing from this list was not tested, nothing more. Differences smaller than 1.76 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 1.76 dB, the shaded band, and the 157.1 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