Originally Posted By: CastleRockerHere is something else to consider. Every suppressor manufacturer will show their db rating. That's not true, Gemtech doesn't. It's to easy to fudge the numbers, regardless of how things test, which is exactly why they don't publish numbers. What good is data if its not coming from a credible source? Independent test data with identical conditions carry more value.
Originally Posted By: CastleRocker However, so far as I know, there is no standard as to how that number is reached, nor is there a standard in instrumention. that's not entirely true either. There is "Military Standard" that most places use, but often times, the ammo choice, and barrel length is different. The standard testing method is 1m, 90 degrees to the right of the muzzle as tested with a B & K 2209 meter.
Originally Posted By: CastleRocker I've listened to suppressors that are way "louder" than another one with a worse, (or louder) db rating. This has to do with the way the factory test was administered as well as the fact that different frequencies of sound may actually "sound" louder to ear than another frequency of that impact sound that is louder by instrument. I concur, dB is a measure of pressure waves and isn't the whole story when you are looking to buy a can. Accuracy is much more important since most people can't tell the difference between 2-3 dB unless they hear them side by side in direct comparison, and even then, the sound from a louder suppressor can have a more pleasant tone.