I'd like to find a sound meter to compare suppressors. The problem is most of the ones I've found only measure up to 130db, which isn't sufficient to test gunshots.

Any suggestions?

Have you looked at apps for your phone or tablet?

I have the NIOSH Sound Level app on my iphone and it works well, though I haven't tried it with gunshots. It claims accuracy within 2 dbA in their tests.

Sorry to say that you will not likely find what you're looking for. Meters and equipment that perform at that level are very, very expensive. there are a wide variety of variables to consider, but the most important being the speed of the sound (impulse) being measured in addition to the frequency and level (SPL). by the time everything is accounted for and the environment is set up for measurement you will have spent several thousand dollars. if you are still curious you can look at these offerings.
Larson Davis 800B with 2520 or 2530 microphone.
B&K 2209 with 4135 microphone.
both still need the proper calibration software.

ETA: This article will be helpful in background and basics. https://www.kaimairiflesuppres...g-to-mil-std-1474-d/

This message has been edited. Last edited by: ltz400,

Can you place a sound meter at a specified distance and direction from the suppressors? Far enough away that the sound is not too loud for the meter but consistently located so that the relative loudness can be compared between different suppressors.

The simple non-technical answer is no you cannot and have any degree of accuracy.

Ok. Thanks, all.