HUH? WHAT'S THAT? WADDYA SAY?!?
To me my loudest gun seems to be the 4 5/8" Ruger Blackhawk .41 mag.
Most powerful, 30-40 AI, I guess. Maybe my .50 muzzleloader with maxi balls and too much black powder.
The loudest thing I have is a Fender Twin Reverb guitar amplifier. It's pretty powerful as well.