School me on muzzle breaks.

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A muzzle break is what happens when you remove a pinned on muzzle brake with a monkey wrench and 3' cheater bar.

Muzzle brakes are primarily designed to brake the recoil impulse.

A properly designed brake won't affect any of the things you mention.
 
How do they reduce recoil?
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Think of it this way. The gasses go out of the barrel, hit the baffles of teh brake, and try to push it forward. since they are connected to the gun, this pulls the gun forward, actually slows reward movement.


Do they also affect poi, bullet speed, muzzle velocity
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I think they should affect POI, all my rifles are breked or they aren't, and i haven't heard anyting about it. i have read that with some bullets a certain MV is needed to stabilize. Not sure if this is true or not...
 
muzzle brakes

the bad side of muzzle brakes are that they increase muzzle blast tremendously and if shooting from a low position in arid country they raise a large dust cloud blocking your vision, but they do reduce recoil.
 
blofled,
Just upping my knowledge where I can. I knew the reduced recoil, but I couldn't for the life of me figure out how or why. The closest one I ever saw was from 50 ft away, so I couldn't really look at it and hazard a guess as to how it works.
 
Not an expert by any means, but any number of methods are used to reduce recoil with barrel alterations. Ports are common, but even flash suppressors are used to a degree. The purpose of the traditional AK supressor (slant style) is to theoretically keep the muzzle down by allowing gas to leave the top first. This is also supposed to reduce dust by blocking the bottom.

Someone more articulate and with a better understanding should chime in at this point.
 
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