Muzzle Brake on a Slug Gun?

ENIGMATIC1 said:
The other thing I think the non brake believers are missing, is that felt recoil is not an instantaneous happening.

The round fires, immediately setting in motion the bullet forward, and the rifle rearward. As the bullet accelerates forward, the rifle accelerates rearward. This continues on for the bullet until it leaves the barrel, the bullet then being at its highest speed, while the rifle is still receiving thrust towards your shoulder as the powder races to escape the barrel.

So it takes all of what, 2 milliseconds for the bullet to leave the barrel after its been started in motion? Where as absorbing the energy into your shoulder probably is more on the magnatude of what, around 50 milliseconds?

So for those 48 milliseconds, you are going to not only have less recoil from the expanding gasses as they are directed rearwards with the muzzle brake, those re directed expanding gasses will also reduce the fixed amount of recoil received from accelerating the bullet out of the barrel.

Lets look at it this, just as an example: Rifle Recoil: 80% Based on bullet weight, 20% based on charge weight.

In an unbraked rifle, 100% of the recoil is absorbed into your shoulder.

In a braked rifle thats ported perpendicular to the bore of the rifle, lets say half of the gasses choose to move out of the break. 100%-10%(half of 20%)=90% of the recoil of the unbraked rifle.

In a braked rifle that is ported rearwards, you get the added benefit that the expanding gasses push the rifle forwards. So 90%-10%(as now the gasses are fighting the rifles recoil)=80% the recoil of the unbraked rifle. That is if just half of the expanding gasses are on your side.

Reported efficiencys of muzzle brakes that I have read, are from between 5, and 45%.
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It's 'starting' to sink in. Slowly, but it is starting:). Thanks for the explaination.
 
Johnn Peterson said:
Okay, thanks, but help me out a little further. The purpose of the flash eliminator is to redirect and/or disperse the light signature of the blast, in much the same way a muzzle brake redirects or mitigates the recoil caused by the blast. My question then is what design function, specifics or differences define the "thingy" on the end of the barrel as a flash eliminator or muzzle brake??:confused:
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Generally, muzzle brakes have simple ports drilled straight through or baffles to deflect the propellant gases to the side (and sometimes angled to the front or rear) so that the jet of propellant gas cannot push backward and contribute to the recoil.

Muzzle brakes are quite common on artillery, as the recoil reduction makes it possible to design a much lighter mounting. The link to the picture below shows an M777 155mm howitzer firing at night. As you can see, the muzzle flash is considerable, which suggests to me that these muzzle devices do not function as flash suppressors.

http://www.defenseindustrydaily.com/images/ORD_M777_Howitzer_Firing_lg.jpg

Flash suppressors function by either diffusing the incandescent gas so that it cools rapidly, or by allowing it to expand and cool before it reaches the open atmosphere. The first type typically has long slots or prongs, which are often chamfered relative to the outer surface, such as on on M14. The second type typically has a conical or cylindrical shape. A Bren gun or a No. 5 Enfield are examples of this type. Sometimes, flash suppressors also function as muzzle brakes as well.
 
tjhaile said:
Generally, muzzle brakes have simple ports drilled straight through or baffles to deflect the propellant gases to the side (and sometimes angled to the front or rear) so that the jet of propellant gas cannot push backward and contribute to the recoil.

Muzzle brakes are quite common on artillery, as the recoil reduction makes it possible to design a much lighter mounting. The link to the picture below shows an M777 155mm howitzer firing at night. As you can see, the muzzle flash is considerable, which suggests to me that these muzzle devices do not function as flash suppressors.

http://www.defenseindustrydaily.com/images/ORD_M777_Howitzer_Firing_lg.jpg

Flash suppressors function by either diffusing the incandescent gas so that it cools rapidly, or by allowing it to expand and cool before it reaches the open atmosphere. The first type typically has long slots or prongs, which are often chamfered relative to the outer surface, such as on on M14. The second type typically has a conical or cylindrical shape. A Bren gun or a No. 5 Enfield are examples of this type. Sometimes, flash suppressors also function as muzzle brakes as well.
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BINGO!! That's the design info I was looking for. And I thought that might be the case. Thanks guys;). Thanks for the explaination and all the clarification.:D
 
canadaman30 said:
Why buy a gun if you can't handle the recoil? Your shooting confidence and accuracy is gone if you fear pulling the trigger.
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There are quite a number of alterations that can be made to tame the recoil or at least make it more bareable. Tayloring the stock length, adding a recoil pad, porting the barrel and even the addition of shock absorption mechanisms/items. I don't care much for porting but that's just me. If some or all of these options help an individual contend with the recoil and shoot better, I say "go for it!" Why not??
 
canadaman30 said:
Why buy a gun if you can't handle the recoil? Your shooting confidence and accuracy is gone if you fear pulling the trigger.
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I would say it depends what your use is going to be.

Hunting? you are not going to feel the recoil of one shot, maybe two ti finish the animal.

target? shooting a few boxes at a time, you really start to feel it. I want a brake on mine to let me continue with consistency.
 
Beach said:
You guys need to put a muzzle brake like this on...

mossberg001.jpg


mossberg004.jpg
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I absolutly want to know where i can find this to put on the fully rifled barrel of my 870 express super mag. And i don't care if it works or what the others will think... cause I think it looks freekin COOL MAN!!!:rockOn:

RYBACK!!!
 
ryback said:
I absolutly want to know where i can find this to put on the fully rifled barrel of my 870 express super mag. And i don't care if it works or what the others will think... cause I think it looks freekin COOL MAN!!!:rockOn:

RYBACK!!!
Click to expand...

Mossbery factory part for the road blocker shotgun.
 
MOSSBERG® 500® ROAD BLOCKERTM
STOPPING CONSUMERS IN THEIR TRACKS

North Haven, CT (January 2009) Expanding upon the Mossberg 500 pump action shotgun
line, the 2009 release of the Road Blocker is sure to stop consumers in their tracks.

Setting the Road Blocker apart from Mossberg’s other special purpose shotguns is a
functional muzzle brake designed to reduce recoil and minimize muzzle jump. The Road
Blocker also features a drilled and tapped receiver, factory-ready for a Picatinny rail. The
pistol grip and heat shield round out the Road Blocker’s package making it compact and
easy to maneuver. For personal or home defense purposes the Road Blocker is ideal for
close quarter situations. Every 500 Special Purpose shotgun includes a free gun lock and
a ten-year limited warranty.
 
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