There's been noise complaints from a newish housing estate near our range. We've had to monitor and record the sound levels at various points outside the range boundary. During equipment setup we had the chance to do spot readings and one of our guys has a 375H&H with removable brake. No difference to the sound level at distance between with or without brake. Different story for those at the firing line of course.
I think the closest monitoring point was about 500m away.
