.308 Winchester (Hornady 168gr)
22″ Bolt Action (Tikka)
Unsuppressed: ~165 dB
ALTUS
• At Muzzle: 139.6 dB (~25 dB reduction)
• Shooter’s Ear: 129.9 dB (~35 dB reduction)
VORIX
• At Muzzle: 133.1 dB (~32 dB reduction)
• Shooter’s Ear: 123.5 dB (~41 dB reduction)
7.62×39 Subsonic
14.5″ Bolt Action
Unsuppressed: ~160 dB
ALTUS
• At Muzzle: 134.7 dB (~25 dB reduction)
• Shooter’s Ear: 125.2 dB (~38 dB reduction)
VORIX
• At Muzzle: 121.7 dB (~38 dB reduction)
• Shooter’s Ear: 119.0 dB (~41 dB reduction)
5.56 NATO (M4A1)
14.5″ Gas-Operated Rifle
Unsuppressed: ~168 dB
ALTUS
• At Muzzle: 144.3 dB (~24 dB reduction)
• Shooter’s Ear: 137.0 dB (~31 dB reduction)
VORIX
• At Muzzle: 136.9 dB (~31 dB reduction)
• Shooter’s Ear: 133.9 dB (~34 dB reduction)
.300 Weatherby (180gr High Velocity)
26″ Bolt Action (Weatherby)
Unsuppressed: Typically 168–172 dB
ALTUS
• At Muzzle: 146.1 dB
• Shooter’s Ear: 139.2 dB
VORIX
• At Muzzle: 144.2 dB
• Shooter’s Ear: 131.5 dB
Testing Note
Peak impulse sound measurements (LZpeak) were recorded approximately 3 feet left of the muzzle and 6 inches right of the shooter’s ear.
Unsuppressed sound levels represent typical centerfire rifle impulse noise for comparable platforms.
Results may vary depending on firearm, ammunition, barrel length, and environmental conditions.