Ringworm:

Thanks for the idea! I will be shooting out a window, and will build a "Goodyear silencer." There will be a gap between the tires and the muzzle, and you have nailed the extension tube that will solve that problem.

While rummaging through some estate goods, I found a sound meter, apparently used in industrial situations. I believe the PO used it to test rifle noise. I need to replace batteries and make sure it works. Then, I propose to evaluate the Goodyear silencer by firing at least one rifle 5 times before I install it, and then 5 times after. Will also include noise levels to the side at 50 feet and at 100 yards (the house).

The rifle I have with the biggest bark is probably a .30-06. From shooting benchrest, I know a 6PPC has a sharp bark as well. But is that from being around lots of them at a time? I also have a 30/100 SMc with a brake, and will include that in the test as well. I will probably also include a .22 rimfire in the test because it will be easy. Anything I'm missing?

Of course, results will be shared here. Thanks for all the good info!

'pest