Muzzle-brake or Suppressor? Or Both?

[rjrivero]

Porting the barrel on a .22 for 6" is an interesting thought. A lot of the integrated suppressors on the market do this kind of thing, but they put a tube and walls on the outside of the barrel to control the expanding gas.

Some things you will no doubt run into: If you strait drill or mill your vent holes, you'll probably end up with burrs on the inside of the barrel. This can cause a cheese grater effect on the bullets and plug your holes with molten lead and cause significant fouling.

The more gas you vent, the more velocity loss you will experience. Be ready to scrap a barrel or two with your trial and error efforts.

Enjoy the experiment. (Coming from a fellow tinker-er.)

 

[Shadow 7D]

Read about lapping a barrel if you are going to port the actual barrel instead of a screw on muzzle device, a muzzle break is easier since it's not rifled.

If you are REALLY good and have a lot of tooling, you could cut a bevel to the inside of the port, Also physics teacher, realize that high pressure gasses move a lot like fluids so you are kinda at the intersection of aerodynamics and fluid dynamics, and learning how to model the behavior of the gas will guide your design.

Or do it the Gun Nut way, and just keep knocking out prototypes until you refine it into something that works the way you want it to.

 

[The_Next_Generation]

rjrivero, I hadn't thought of porting the actual barrel, just the brake.

Porting would be much better looking than a big 'ol chunk of metal stuck on the end!

Shadow7D, I was hoping to come up with a thread-adapter for my barrel as it is currently not threaded. This way I could attach the threaded piece, then screw on the attachment. Also, when I did a job-shadow at Blue Origin last month (private space company by Jeff Bezos) I got to look at one of their rocket engine test stands. Pretty cool how they can use high pressure water to simulate the behavior of exhaust gases!