I got the Donnyfl Tatsu today. I ran both the stock Moderator and the Tatsu through the chronograph and tested it with a decibel meter. So far everything looks very good and it drop the volume about 7 to 10 dB. I’ll first post the chronograph readings when I first received the FX Wildcat Compact .25 and then the number from today with the stock Moderator and the Donnyfl Tatsu. I tried to set the chronograph about 1 foot away from the end of the barrel.