This brake has the two larger ports (shown), then 9 smaller holes all around the brake. Came on a late 80's/early 90's rifle. Was hoping someone on here would recognize it so I could learn a little more about my rifle.

I have never seen one of these before and figured the original owner may have installed it after shooting the gun once or twice.


I think I am going to get a thread protector made for the rifle.

I am thinking it is not a commerically made brake. Looks like a machinist may have made it for a buddy or himself. What is the thread dia and pitch? Is it a larger than bore through the brake? Could you remove it and post some more pics?

Samm

Ditto Steven.
Always interesting to know the diameter of the bullet-exit hole compared to the bullet diameter.

Thank you for the responses!

The rifle is a .416 rem mag. When I get home tonight I will post more photos and get measurements...it comes off easily.

I was calling it a Poly Choke for a while

Any gunsmith can make a brake, any machineist can make one also..Yours is homemade and probably works just fine..A brake does nothing more that displaces and directs gas. That one is on the ugly side btw..Unfortenatly the larger the brake the better it works..but there is a in between size that works well enough..

Any recommendations on a place that could make a thread protector?

I think if I were to pay for a muzzle brake to be put on a rifle I would go with Vais.

I didn't get measurements last night, but will try to tonight

ANY machine shop can make you a thread protector and depending on the thread size/pitch you might find one online that can be drilled out for the caliber.

Definitely a home made device...nice LARGE expansion chamber...kinda reminds me of the hole pattern around some propane torch tips. You can measure the diameter of the holes and the slots to determine the total area as compared to the caliber area and calculate the overall efficiency percentage...for "kicks". Definitely a "different design".

You want the exit hole about 0.020" larger than caliber so 0.434" is in the right ballpark.

LUCK

Ditto NONAGONAGIN.
That should be very effective as a recoil reducer for benchrest shooting. And a thread protector would be desirable for hunting use.

Thank you for the responses. I learn something new every day on this forum.

Can't wait for pay day so I can actually get some ammunition for this gun

quote:

Originally posted by NONAGONAGIN:
ANY machine shop can make you a thread protector and depending on the thread size/pitch you might find one online that can be drilled out for the caliber.

Definitely a home made device...nice LARGE expansion chamber...kinda reminds me of the hole pattern around some propane torch tips. You can measure the diameter of the holes and the slots to determine the total area as compared to the caliber area and calculate the overall efficiency percentage...for "kicks". Definitely a "different design".

You want the exit hole about 0.020" larger than caliber so 0.434" is in the right ballpark.

LUCK

When I built my Vais style brakes I kept the hole as close to the bore size as possible.
My thinking is that the gas is traveling much faster than the bullet and I wanted it to
stay behind the bullet as much as possible. This way as the bullet passes the holes in
the brake it changes direction and exits to the side reducing recoil. I also found that
a row of 4 hole was all that was needed with 8 holes in the circle around the brake. The
size of the holes on my brakes are 3/16 inch. I am not a math expert to figure gas volumns
or the like but thru expermentation I arrived at what worked best for me I believe. I
observed the burnt gas residue left around the holes of the brake and found by the 3rd
hole most of the gas pressure was spent. A very good fit of the threads is a MUST.

Samm

"Classic Muzzlebrake"

someohow it doesn't seem to me that those two words belong together.

I have a Cutts Compensator for 30 caliber rifles, yes they made them. It is sitting around here somewhere waiting to be installed on a classic rifle with a ruined muzzle. It is neat, and probably a bit rare.

they made a lot of Cutts muzzle brakes, those guys messed up a lot of guns..Todays brakes are oh so much better and way more streamlined..

I used them when they first got popular, and they got me to shooting big bores without flinching, and I quit using them at that point. that was many many years ago, nobody condemned me then because they didn't know what they were! Many told me silencers were illegal. .

I have a magnaport on my .375 as it cane that way and is actually very nice and doesn't show or make the barrel longer. I also have a brake on my Ruger African ,338 as it came that way. I use it with the brake for bench work and sighting in, and the thread protector looks nice.

I noticed all the guides where I hunt elk have them on their rifles, More and more huntes are using them, Lots of locals are using them. Like it or not they are becoming more and more popular as time goes by and more and suggests that more and more men are becoming more and more metrofaggie for lack of a better word to print. Its been a boring day!

I think that more and more shooters are finding out that you don't need to get the shite stomped out of you by some evil, nasty recoiling rifle and still be considered a man...and that they can shoot a larger caliber rifle at the same time. Besides the hue and cry of the nasty thing on the end is being drowned out by that realization and the fact that there are noise canceling ear protection that DOESN'T get in the way of hearing the bear trying to sneak up on you. Old wives tails are going where old wives tails should go.

Samm...I had the same thoughts at one time but after thinking about it for a while I realized that any air in front of the bullet will be displaced through the same holes as the gas behind and probably due to the time element being very short and the width of the exit hole being very short it might not have much of an effect...MAYBE...and the fact that 0.010" is a VERY SMALL gap on either side of the bullet. You're definitely right about the alignment of the threads...bring off just a small amount and shite can definitely happen. Besides the only way to know for certain WHAT effect there is, if any, is to do a lot of testing

Calculating the hole volume is nothing but the old "A pie are(R) square..."(yes, I know...PIE are round, cake are square, but you will remember now, won't you ) AREA = Pi(3.1415) times Radius Squared times the number of holes divided by the area of the caliber hole. Same as calculating the area of any cylinder.

3/16" is .1875"/2 = 0.0937 squared = .008789 x Pi (3.1415) = .0276" times the number of holes...say 30, = .828. A .458 exit hole = Pi x .458/2 = .229 squared = .052 x 1 = .052/.828 = .063 x 100(to convert to percentage) = ~63% efficiency. You can find this calculation online along with recoil calculating software to convert the amount of probable recoil reduction...all theoretical of course as it's not aa simple as this, but it gives a good ball park figure. Watch the sharp eyes find my mathematical mistakes which is the way it should be.

LUCK

The first time I went elk hunting I was around 14 years old. After reading on web forums....I knew I wanted a .338 win mag for this. The first year I carried my .30-06 with 180gr bullets...the second year I carried my new stainless .338 win mag. Curious about the recoil difference...I purchased with a brake.

My .338 has a BOSS (Browning), and kicks similar to a .243 or so. Very accurate and easy to shoot. Kicks a lot less than that .30-06 does.

I do not mind hunting with ear protection either electronic or plugs close by...and when hunting with a friend it has never bugged me to stop and make sure my ears were covered before they shot.

Here is a test shared on the Vais muzzle brake website from a member of ours on here...

http://forums.accuratereloadin.../3221043/m/803107706

quote:

Originally posted by 458Win:
"Classic Muzzlebrake"

someohow it doesn't seem to me that those two words belong together.

Yes, puting those two words together seems like an oxymoron, and will still be 100 years from now. Different strokes, I guess.

quote:

Originally posted by ColoradoMatt:

quote:

Originally posted by 458Win:
"Classic Muzzlebrake"

someohow it doesn't seem to me that those two words belong together.

Yes, puting those two words together seems like an oxymoron, and will still be 100 years from now. Different strokes, I guess.

I meant in relation to the brakes that are available today.

Bottom line is: They work and they are ugly as "shite" to quote nonagonagain.

AND THE EVIL ONE SAID "I SHALL SMITE THEM ABOVE AND BELOW AND LAY THEM LOW AND SHITE UPON THEIR FACES FOR THEIR INIQUITIES"...or was that "shat".

Either way "IT" causes trouble whether on the end of a barrel or the bottom of a boot.

LUCK

I am able to report that this gun does indeed kick harder than my .458 Lott Ruger #1 and my .458 Win Mag Browning Safari. Going to contact Vais for a replacement brake for the bench, and get a thread protector. This brake must be on for (ugly) looks