Something for you blokes interested in gadgets that do work... Yes these things aren't suppressors nor are they those flimsy blast jacket/muzzlebrake things out there.
These take the concussion blast that lifts your hair and blows coke cans off the shooting bench.
The noise is still there and hearing protection is still essential, but without that shockwave from short barrelled rifles.
We use one on a 16" barrel 308 and a 223 as well, and my wife and I can attest to the difference they make to someone sitting next to you in a SxS or vehicle.
These ones are made in USA by PWS, and suit the rifles of the same name here but come in 5/8x24 and 1/2x18.
The .30 cal one here, pictured, works way better on a 300BO than on 308, but there's way less gas in that cartridge.
Again, NOT a suppressor and legal here in Qld.
Hint: they work VERY WELL on a 22LR and cause enough backpressure to allow subs to cycle that normally wouldn't have enough ooomph to operate a cat C .22.
In a centrefire self-ejecting rifle, turn the gas down one setting from standard as the blast pressure being held in the unit raises the gas pressure operating the action system.

- BD1.jpg (680.95 KiB) Viewed 953 times
You can unscrew them to clean, here you can see the chamber inside.
Unlike normal tube blast diverters open at the front, these contain and trap some of the initial concussion.

- BD2.jpg (696.58 KiB) Viewed 953 times
Don't rubbish them, they do a job and aren't for everyone. Again, in no way can you expect them to do the job of a way larger suppressor, but we haven't that option here right now, and I have doubts that we ever will.
But again, LEGAL here, and work the same as a brake in reducing recoil by providing a surface for the muzzle gas to hit and pull the rifle forward, without the huge concussion of good brakes. And PWS make good stuff.
Will your day go on without one? Yep.