We test at the shooter's ear because it's the only place that matters to hunters and sport-shooters. There is nothing wrong with mil-spec testing but it's an incomplete picture of what the silencer sounds like to the shooter. Independent testing put us at 131.5 dB (10 cold-shot average) using 168gr PMC .308 FMJ on a 20inch barrel. A comparison of similar silencers using the same testing procedures puts us at the second quietest (behind the Liberty Freedom Mag; which is a $1,000.00+ silencer). #huntquiet
Yes but that is the industry standard to measure at the muzzle for example the Rugged surge meters 131 at the muzzle, what yours does at the ear with a 20" barrel while the surge was on a 16" barrel . So by listing your numbers it looks like they sound the same. But the surge is 126 at the ear on a 16" barrel. The griffin armament recce 7 is 130.8 at the ear with 16" barrel.
Here are a few more silencers from various manufacturers all at the ear all 16" barrels.
131.6 on the dead air sandman at the ear 16".
132 on the radical firearmsat the ear 16".
131.5 on the dagger at the ear 16".
131.4 surefire 300sps at the ear 16"
130.4 on thunder beast ultra 9 at the ear 16"
129.2 on griffin 30sd at the ear 16"
131.6 on the dead air sandman at the ear 16"
So not the second quietest but it is the heaviest. I have no dog in this fight I can pretty much use any can I want, but I like correct information.