source for large dia benchrest muzzle brakes ?

al( and almost anyone else)
wouldn't the mil use the most effective brake design available ?( ok yes it is the mil)
but everything from 50bmg,tanks and a whole bunch of bigger things still use large opposing multi chamber ports to control recoil. high velocity, high gas volume high recoil...clam shell/port brakes.
I have a swirling pattern of small holes on a srewd brake on a 300 win mag.

how much of a small round hole is effective brake ? maybe 25% is mostly rear facing, 50% in not rear facing, and the other 25% is 45* or less.
 
rsmithsr said:
al( and almost anyone else)
wouldn't the mil use the most effective brake design available ?( ok yes it is the mil)
Click to expand...



Yes, the military uses very effective brakes, they're very wide (NOT what you asked about) and

they're angled back (NOT what you wanted) and

they have a HUGE problem with debris (NOT a concern for your application)


I didn't say "they're not effective"..... in fact in my very first answer in this thread I dimensioned a mil style brake and you said you wanted round.....


rsmithsr said:
but everything from 50bmg,tanks and a whole bunch of bigger things still use large opposing multi chamber ports to control recoil. high velocity, high gas volume high recoil...clam shell/port brakes.
Click to expand...

Yes, and how is this relevant to your above described wants again?

rsmithsr said:
I have a swirling pattern of small holes on a srewd brake on a 300 win mag.
Click to expand...

I didn't say anything about a Shrewd, nor any other of the holey brakes..... I said HARRELL


rsmithsr said:
how much of a small round hole is effective brake ? maybe 25% is mostly rear facing, 50% in not rear facing, and the other 25% is 45* or less.
Click to expand...

I can't reply to this..... nor agree to any of it.

I showed it, with pictures, and it's easy to run actual measured numbers.

OK, not into math???....next time you're out in the yard, spray your garden hose onto a half-section of 3" pipe and onto a slab of wood 3" wide... see which one redirects more water.

or count the impact surfaces

or just stick a 30.00 Harrell on and TRY IT! :)
 
rsmithsr said:
...but everything from 50bmg,tanks and a whole bunch of bigger things still use large opposing multi chamber ports to control recoil. high velocity, high gas volume high recoil...clam shell/port brakes.
Click to expand...
Really?

Appears the US Army failed to take your advice. Early Stryker MGS units had multiport (multiple hole) brakes on the ends of their muzzles. Apparently, current generation units have removed this feature.

Early Stryker MGS, w/ multiport brake: https://www.armyrecognition.com/Amerique_du_nord/Etats_Unis/vehicules_a_roues/Stryker/Stryker_MGS/Stryker_MGS_Mbile_Gun_System_USA_07.jpg

Video of current MGS systems in operation - note lack of firing jacks when firing at a 90 degree angle to the vehicle! https://www.youtube.com/watch?v=ZHhG4sIulcg Also, note the flash suppressor on the .50 BMG mounted on the vehicle.

Multiple chambered brakes? Someone forgot to tell the US Army, Navy, and Marine Corps. 25mm cannon have a brake on the end of the barrel, and there are ZERO chambers in them. That's right - the brake is simply a "cone" or "can" with holes in it. The first picture at http://www.navweaps.com/Weapons/WNUS_25mm_mk38.php is especially interesting. A slightly better image of the brake is in the first image at https://en.wikipedia.org/wiki/M242_Bushmaster, which shows - a cone with holes in the sides.
 
Almost forgot....

One final example of a muzzle brake - the Browning BOSS tuner. Original units were composed of a large diameter cylinder, tapped on two ends, with 4 sets of 8 holes drilled "radially". (32 hole brake.) On one end, a cylindrical weight with a greater-than-bore diameter drilled through it is screwed on. The other end is threaded to match the threading on the barrel. A lock screw threaded on to the threads on the barrel, and butted against the weight. Tuning is
  • Determine the point of impact on target;
  • Turn the combined mass in or out;
  • Lock the mass in place with the lock screw.
Depending on the setting, watching groups grow or shrink is possible. With a little luck, and some good data keeping, it is possible to find a suitable tuner setting with less than a box of ammo. (20 rounds.) Yes, the recoil reduction is greater with "overbore" loads - my favorite 30-06 combination was a 125 grain bullet and 50 grains of IMR-4895.

As a tuner, and a brake, the BOSS works. As a rifle for use on a crowded range, it is a sure recipe for annoyed neighbors. This is probably why Browning later developed the "BOSS - CR", which is a BOSS unit with only 4 holes. This unit is simpler (it does not have a restrictor), but still uses the lock nut.

Images of the BOSS - CR are below.

BOSS - CR, and front view of BOSS - CR
 

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maybe they took it off for a reason..like it did not work well ??
second link is an ad for a holster..i left.
Asa Yam said:
Really?

Appears the US Army failed to take your advice. Early Stryker MGS units had multiport (multiple hole) brakes on the ends of their muzzles. Apparently, current generation units have removed this feature.

Early Stryker MGS, w/ multiport brake: https://www.armyrecognition.com/Amerique_du_nord/Etats_Unis/vehicules_a_roues/Stryker/Stryker_MGS/Stryker_MGS_Mbile_Gun_System_USA_07.jpg

Video of current MGS systems in operation - note lack of firing jacks when firing at a 90 degree angle to the vehicle! https://www.youtube.com/watch?v=ZHhG4sIulcg Also, note the flash suppressor on the .50 BMG mounted on the vehicle.

Multiple chambered brakes? Someone forgot to tell the US Army, Navy, and Marine Corps. 25mm cannon have a brake on the end of the barrel, and there are ZERO chambers in them. That's right - the brake is simply a "cone" or "can" with holes in it. The first picture at http://www.navweaps.com/Weapons/WNUS_25mm_mk38.php is especially interesting. A slightly better image of the brake is in the first image at https://en.wikipedia.org/wiki/M242_Bushmaster, which shows - a cone with holes in the sides.
Click to expand...
 
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