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Long Range Hunting & Shooting
Can switching muzzle brakes change muzzle velocity??
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<blockquote data-quote="WildRose" data-source="post: 1232398" data-attributes="member: 30902"><p>Pardon the pun but there are a lot of holes in your theory here.</p><p></p><p>The firing of the bullet causes the mass of the bullet plus the pressure exerted against it to cause the rifle to recoil backwards. </p><p></p><p>This makes up about 40% or less of felt recoil. The only way we can reduce this portion of recoil forces is to shoot lighter bullets and/or lower volumes of powder resulting in reduced velocity loads.</p><p></p><p>The balance of recoil forces come from what I term the rocket motor effect. The gases exiting the barrel push the rifle backwards in the same way a rocket motor powers a rocket.</p><p></p><p>The latter is what is affected by a muzzle brake. The bullet has already exited before any serious amount of gas escapes the barrel and thus any effect the brake has on MV has to be minimal at best.</p><p></p><p>The manner in which and volume of these escaping and expanding gases are directed by the brake determines how much felt recoil is reduced.</p><p></p><p>Real world testing of MBs shows some to reduce felt recoil up to 70% and will also determine how loud the rapport is to the shooter and those around him/her. The most effective brakes tend to channel those gasses in large part back towards the shooter and in doing so also direct much of the muzzle blast.</p><p></p><p>The reason suppressors are so effective in reducing recoil is because they allow those gasses to expand in a large (relatively) large contained area and then escape at much lower velocity following the exit of the bullet. This is why the best suppressors will reduce felt recoil by around 70% as well. Unlike the brake however this large volume of trapped gas exerts pressure inside the barrel such that it can have a negative effect on gas operated semi auto systems which is why it is important to put an adjustable gas block on them.</p></blockquote><p></p>
[QUOTE="WildRose, post: 1232398, member: 30902"] Pardon the pun but there are a lot of holes in your theory here. The firing of the bullet causes the mass of the bullet plus the pressure exerted against it to cause the rifle to recoil backwards. This makes up about 40% or less of felt recoil. The only way we can reduce this portion of recoil forces is to shoot lighter bullets and/or lower volumes of powder resulting in reduced velocity loads. The balance of recoil forces come from what I term the rocket motor effect. The gases exiting the barrel push the rifle backwards in the same way a rocket motor powers a rocket. The latter is what is affected by a muzzle brake. The bullet has already exited before any serious amount of gas escapes the barrel and thus any effect the brake has on MV has to be minimal at best. The manner in which and volume of these escaping and expanding gases are directed by the brake determines how much felt recoil is reduced. Real world testing of MBs shows some to reduce felt recoil up to 70% and will also determine how loud the rapport is to the shooter and those around him/her. The most effective brakes tend to channel those gasses in large part back towards the shooter and in doing so also direct much of the muzzle blast. The reason suppressors are so effective in reducing recoil is because they allow those gasses to expand in a large (relatively) large contained area and then escape at much lower velocity following the exit of the bullet. This is why the best suppressors will reduce felt recoil by around 70% as well. Unlike the brake however this large volume of trapped gas exerts pressure inside the barrel such that it can have a negative effect on gas operated semi auto systems which is why it is important to put an adjustable gas block on them. [/QUOTE]
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Can switching muzzle brakes change muzzle velocity??
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