Mag-na-port or muzzle brake?

What are a few recommended brakes. My muzzle diameter is going to be about .9 inches and I want one that can be machined.
 
You just need to get a custom brake built. I only have one "store bought" brake. The rest are custom machined to whatever diameter I want.
 
Have a gunsmith turn down and thread the end of your barrel to 5/8" x 24t, which is the standard for commercial production brakes.
This is all easy to do as part of the build, before he fits the barrel to the action. Depending on what you select he can machine/contour the brake to your barrel OD for a seamless transition.

Here's one with a .85, very close to the .875 you probably will end up with as a standard Bull contour:

http://www.brownells.com/rifle-part...70.aspx?avs|Manufacturer_1=precision armament
 
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...electrochemically machined into the barrel.
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Wrong. Porting is done using electrical discharge machining (EDM) process. Specifically, an electrode EDM machine is used as opposed to a wire EDM.

The electrode is made from a carbon / metal composite material and machined to the shape of the port. The barrel is placed in a dielectric oil bath and the electrode "erodes" its way through the metal.

You have to think of a small lightning storm at the end of the electrode where thousands of small arcs per second happen through the dielectric oil between electrode gap and the metal.

Generally, a muzzle brake will give more recoil reduction simply because the port area is so much larger and can vent more gas.

One EDM barrel port that is different and gives about the same recoil reduction as a brake is the Les Baer Enforcer muzzle brake that can be ordered on his .308 rifles.

Unfortunately, Les only ports the barrels on the guns that he sells.
 
I guess we have always ported the wrong way then. We have done it with an automated drill press set up on the lathe.
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It can be done that way too

EDM is faster and cleaner because it doesn't leave burrs on the inside like a drill bit, and is easier for doing angles
 
I have first hand experience with MagnaPorting. This process eliminated muzzle jump in my .308 rifle while providing some recoil reduction. Bluing was not marred at all. I strongly recommend this process if your rifle has annoying muzzle jump.

Jack
 
tobnpr said:
Have a gunsmith turn down and thread the end of your barrel to 5/8" x 24t, which is the standard for commercial production brakes.

This is all easy to do as part of the build, before he fits the barrel to the action. Depending on what you select he can machine/contour the brake to your barrel OD for a seamless transition.



Here's one with a .85, very close to the .875 you probably will end up with as a standard Bull contour:



http://www.brownells.com/rifle-part...70.aspx?avs|Manufacturer_1=precision armament
Click to expand...


I agree with this. I had mine built right in when the barrel was chambered. Seamless is exactly how it turned out.

ImageUploadedByTapatalk1419446413.538265.jpg
 
^^ Impressive work. Even blown up, I had to look really hard, it's as invisible as it gets. Is that a Cerakote job?
 
I have a custom brake on my 308 , it's a pleasure to shoot. A friend of mine ordered a clamp on brake works just as good . Check out Witt Machine,check on line or give them a call, great company to deal with. My next brake I will order from them.
 
I guess we have always ported the wrong way then. We have done it with an automated drill press set up on the lathe.
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You could port a barrel with a hand file if that's what you wanted to use.

The question was about Magna Port - I guarantee they use an EDM. I toured their facility in 1984 and saw the machines.

I have also owned an electrode EDM and ported my own barrels. The advantage to the EDM over any other method is that it does not create heat or stresses in the material, leaves no tool marks, will not damage the finish on adjacent surfaces, and leaves no burrs at the edges of the cut.

It also allows the port shape to be whatever shape you want and can make in the electrode material giving a lot of options in porting.
 
Some thoughts

Since 1,000 yards was mentioned, I'd be very concerned about the muzzle. If you have a good muzzle, that will be gone if you install a brake. The brake in effect becomes the muzzle. Will it have a 11 degree dish? Or whatever the shape, so long as gas pressure is consistent for 360 degrees you're GTG. If not, the pressure on the base of the bullet can vary and this will affect long range accuracy. If this is the case, then go with Magnaporting.

Muzzle brakes do work to tame recoil. Fitted properly and with a good muzzle, they should work well.
 
The brake in effect becomes the muzzle.
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Not really, since it has no contact with the bullet at all.

The crown and "muzzle" remain the same, and the brake acts more as an expansion chamber and diverter for the gasses
 
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