TargetTalk

I have a question that some of you might be able to help me with. I probably already know the answer, but here goes. Is there a simple, inexpensive way to measure the loudness of a firearm from a distance of about 50 yards? I’m not talking about precise db measurements, just comparing the report of say a .22 and a .38 revolver and being able to see the results on some sort of graph. Would any of the sound recording programs available for computers do this?

I would like to develop a quiet, accurate load for about 25 feet that I can shoot in a K38 revolver without disturbing anyone. I have a safe, semi-indoor place to shoot, but firearms noise tends to bother folks. I have used plastic, rubber, and wax bullets with primers for power, but I would like something a little better. I have also used a muffler tube like the army developed and it works pretty good but it is cumbersome.

I know that sound level measurement is very complex, especially with impulse noise like that of a firearm. I would just like to have a better way to compare the noise levels of different loads without having to yell at a friend “how did that one sound?”

If you have any insights on this, I would like to hear them. Thanks a lot.

Terry

Interesting...

I am no expert on the subject, but I would think that you would be able to compare different loads. Just make sure automatic gain control, level control or normalization is turned off.

A sound meter would be much better and are available for under $100. I know Radio Shack has one. Do a web search and I'm sure you will find more.

Steve T

I hate to say it, but the answer is NO.

The problem is that firearms produce a very sharp report - a very fast rise in the pressure curve. Ordinary sound meters are not sensitive enough to pick this up accurately. The suppressor design community is using high-end pressure transducers (try the subguns.com bullettin boards for details) for this sort of thing.

Thanks for the replies. That is kind of what I thought. After doing some reading I see it takes some sophisticated equipment to compare that type of impulse noise. Thanks anyway.

Terry

Just curious, does anyone know off hand how loud the average subsonic and supper sonic 22lr report is in db?