.30 sumo

The hole in the old ones are smaller..n for my use the pitch is lower.. what happened is that many people use the moderators on flexible shrouds..for when you pull the trigger to the tip of the moderator the pellet end clipping the last baffle or the inside tip of the moderator..has to be that they were a lot of returns..so it was decided to open more the holes..is not that is loud is that I know that for my use with a smaller hole it would have worked better....all my supresor are donny.. really wanting for the new fatboy ..mod