TerraN_EmpirE
Tyrant King
Also to recover this. Recoil energy isn’t what I think you are making it out as.
The energy of release is via the gas the bullet is light so the Newtonian aspect is limited. I mean ~140 grains of bullet is propelled down the barrel vs a vs 58,100 grains of rifle and 200 lbs of soldier.
It’s like an Train trying to push a cruise ship out of port.
The cartridge contains 80,000 psi of pressure as peak during firing but the cartridge’s internal volume is small and the pressure isn’t just trying to push in one direction, it only exists at full pressure for a set of micro seconds. Well the max of the rifle and shooter are larger.
The propellant burn released the chemical energy of the round. That chemical burn is the transition from a solid state to a gas that gas and its expansion is harvested by the rifle.
In a Bolt action rifle the felt recoil is direct through the rifle as once the bolt is locked the whole system is rigid. The release is only via the end of the muzzle. Once the bullet is fired the ignition heats the cartridge the brass or steel or polymer softens and expands the bullet is now basically a moveable obstruction and the gas pushes it down the barrel. this is the same physics as a champagne cork. The gas expansion can even be used against recoil via design of a muzzle break that will channel the gas release counter to the rearward momentum. At the cost of being louder.
In semi automatic or automatic rifles the bolt “floats”. It’s suspended in a channel by springs.
like a bolt action the bolt head has locking lugs and the chamber has locking teeth into which the lugs lock. The lock is simply the bolt head having cammed into place.
Unlike in a bolt action where the action is unlocked manually. The automatic system uses gases released in the firing to in this case actuate a piston once the pressure has reached a set peek point and the bullet has passed the gas port. Once the Piston pushes against the bolt key. The Bolt carrier group is pushed rearward as this happens the bolt is partially unlocked, the pressure in the cartridge pushing against the bolt face now starts to rotate the bolt and it’s lugs in their grooves completing the process of Unlocking the bolt. The momentum will now push the bolt carrier group rearward once the operation has opened. After a set distance the cartridge will be expelled with a mechanical assist by the extractor which rides on the Bolt head and will be actuated by a structure built into the receiver housing. With help of the extractor and the residual pressure inside the case, said case will now be propelled clear of the weapon.
The bolt carrier group riding on momentum is still pushing backwards against spring pressure as it travels. Basically this system is a piston pushing a piston.
The full recoil of the round is softened along the way as the mechanical actions bleed off energy and the cartridge is expelled well still having residual pressure. The bullet was directed with the systems peak pressure but the mechanism is absorbing off excess energy.
Felt recoil will not occur until the BCG has maxed out it’s travel, the spring(s in the case of the MCX) has reached maximum compression and the energy of the shot has transferred through said spring into the receiver and then the shoulder. There is other energy from the firing but the muzzle break or in this case suppressor contains the bulk of it and it’s release is lower than the peak which expelled the bullet.
During this operation the gas pressure has been mechanically harvested to fire the bullet, open the gas piston, unlock the bolt, propel the mass of the BCG against a the springs, assist in ejection of the spent cartridge and reset the trigger hammer. The springs in the system are acting as shock absorbers. Once they max out the last residual kinetic energy is transferred via the receiver and stock to the shooter. But as this happens something else takes place the BCG now shifts and rides forward on the spring pressure the shock of this inversion causes the rifle now to move forward just as it was moving backwards. The only question is which is stronger. It’s a bit like a mass dampener.
In constant recoil systems like the Ultimax 100 the springs are tuned such that the BCG never actually maxes out rearward momentum stops in mid travel and then moves forward inverting the movement.
in Ballanced recoil systems like the AEK series. As the bolt moves rearward a counter mass moves forward. So as the BCG maxes out travel a second counter mass does the same.
Now pound for pound round for round the MCX in its 5.56x45mm version is considered a softer shooting rifle than similar competition like the HK 416. Most military rifles are over gassed for reliability in adverse conditions as a rule. Meaning that their gas systems are designed to allow more gas into the piston chamber than needed to unlock the bolt. As such the bolt moves backwards in it’s cycle faster than it needs to. If you look over this rundown what that means is that the bolt is unlocked sooner well the bullet is still in a higher pressure point during firing. The bolt is then forced back at higher speed and maxes out sooner transferring its energy faster.
Piston guns are especially notorious for this as the piston gas chamber can only contain so much pressure. Well “Internal piston” aka Directed Impingement system have basically a straw that has a larger volume of space before the gas key tap at the end is pushed back with enough pressure to unlock the bolt.
Suppressors compound it farther as they trap gasses at the muzzle. And basically add length to the barrel.
AR15’s history is a perfect example of this principle at work as early issues with M16 were caused by an improper propellant used in the rifle with corrosive effects eroding the gas port allowing more gas into the gas tube increasing rate of fire, felt recoil creating jams and breaking parts. To counter this along with chime lining chambers, barrels, gas tubes and more a weighted buffer was added to the recoil system dampening momentum.
An adjustable piston system like the MCX allows the shooter the choice of a faster more sharp cycle better suited for poor conditions or venting more gas reducing the press on the piston allowing the chamber pressure to be less when the bolt unlocks allowing a more graduated cycle.
So I disagree with your assertion.
The energy of release is via the gas the bullet is light so the Newtonian aspect is limited. I mean ~140 grains of bullet is propelled down the barrel vs a vs 58,100 grains of rifle and 200 lbs of soldier.
It’s like an Train trying to push a cruise ship out of port.
The cartridge contains 80,000 psi of pressure as peak during firing but the cartridge’s internal volume is small and the pressure isn’t just trying to push in one direction, it only exists at full pressure for a set of micro seconds. Well the max of the rifle and shooter are larger.
The propellant burn released the chemical energy of the round. That chemical burn is the transition from a solid state to a gas that gas and its expansion is harvested by the rifle.
In a Bolt action rifle the felt recoil is direct through the rifle as once the bolt is locked the whole system is rigid. The release is only via the end of the muzzle. Once the bullet is fired the ignition heats the cartridge the brass or steel or polymer softens and expands the bullet is now basically a moveable obstruction and the gas pushes it down the barrel. this is the same physics as a champagne cork. The gas expansion can even be used against recoil via design of a muzzle break that will channel the gas release counter to the rearward momentum. At the cost of being louder.
In semi automatic or automatic rifles the bolt “floats”. It’s suspended in a channel by springs.
like a bolt action the bolt head has locking lugs and the chamber has locking teeth into which the lugs lock. The lock is simply the bolt head having cammed into place.
Unlike in a bolt action where the action is unlocked manually. The automatic system uses gases released in the firing to in this case actuate a piston once the pressure has reached a set peek point and the bullet has passed the gas port. Once the Piston pushes against the bolt key. The Bolt carrier group is pushed rearward as this happens the bolt is partially unlocked, the pressure in the cartridge pushing against the bolt face now starts to rotate the bolt and it’s lugs in their grooves completing the process of Unlocking the bolt. The momentum will now push the bolt carrier group rearward once the operation has opened. After a set distance the cartridge will be expelled with a mechanical assist by the extractor which rides on the Bolt head and will be actuated by a structure built into the receiver housing. With help of the extractor and the residual pressure inside the case, said case will now be propelled clear of the weapon.
The bolt carrier group riding on momentum is still pushing backwards against spring pressure as it travels. Basically this system is a piston pushing a piston.
The full recoil of the round is softened along the way as the mechanical actions bleed off energy and the cartridge is expelled well still having residual pressure. The bullet was directed with the systems peak pressure but the mechanism is absorbing off excess energy.
Felt recoil will not occur until the BCG has maxed out it’s travel, the spring(s in the case of the MCX) has reached maximum compression and the energy of the shot has transferred through said spring into the receiver and then the shoulder. There is other energy from the firing but the muzzle break or in this case suppressor contains the bulk of it and it’s release is lower than the peak which expelled the bullet.
During this operation the gas pressure has been mechanically harvested to fire the bullet, open the gas piston, unlock the bolt, propel the mass of the BCG against a the springs, assist in ejection of the spent cartridge and reset the trigger hammer. The springs in the system are acting as shock absorbers. Once they max out the last residual kinetic energy is transferred via the receiver and stock to the shooter. But as this happens something else takes place the BCG now shifts and rides forward on the spring pressure the shock of this inversion causes the rifle now to move forward just as it was moving backwards. The only question is which is stronger. It’s a bit like a mass dampener.
In constant recoil systems like the Ultimax 100 the springs are tuned such that the BCG never actually maxes out rearward momentum stops in mid travel and then moves forward inverting the movement.
in Ballanced recoil systems like the AEK series. As the bolt moves rearward a counter mass moves forward. So as the BCG maxes out travel a second counter mass does the same.
Now pound for pound round for round the MCX in its 5.56x45mm version is considered a softer shooting rifle than similar competition like the HK 416. Most military rifles are over gassed for reliability in adverse conditions as a rule. Meaning that their gas systems are designed to allow more gas into the piston chamber than needed to unlock the bolt. As such the bolt moves backwards in it’s cycle faster than it needs to. If you look over this rundown what that means is that the bolt is unlocked sooner well the bullet is still in a higher pressure point during firing. The bolt is then forced back at higher speed and maxes out sooner transferring its energy faster.
Piston guns are especially notorious for this as the piston gas chamber can only contain so much pressure. Well “Internal piston” aka Directed Impingement system have basically a straw that has a larger volume of space before the gas key tap at the end is pushed back with enough pressure to unlock the bolt.
Suppressors compound it farther as they trap gasses at the muzzle. And basically add length to the barrel.
AR15’s history is a perfect example of this principle at work as early issues with M16 were caused by an improper propellant used in the rifle with corrosive effects eroding the gas port allowing more gas into the gas tube increasing rate of fire, felt recoil creating jams and breaking parts. To counter this along with chime lining chambers, barrels, gas tubes and more a weighted buffer was added to the recoil system dampening momentum.
An adjustable piston system like the MCX allows the shooter the choice of a faster more sharp cycle better suited for poor conditions or venting more gas reducing the press on the piston allowing the chamber pressure to be less when the bolt unlocks allowing a more graduated cycle.
So I disagree with your assertion.
