locked breech,blowback??definitions
I am wanting text book definitions fo these terms.locked breech what exactly happens when??what order?blowback same thing.i have a general idea of what happens but i want the long three dollar definition/explanation.thanx
SUBMARINE SAILOR,TRUCK DRIVER,RUSTY WALLACE FAN AND AS EVERYONE SO OFTEN POINTS OUT PISS POOR TYPIST e-mail:WNUNLEY@USIT.NET
SUBMARINE SAILOR,TRUCK DRIVER,RUSTY WALLACE FAN AND AS EVERYONE SO OFTEN POINTS OUT PISS POOR TYPIST e-mail:WNUNLEY@USIT.NET
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Blowback operated weapons use a free floating (not attached to the barrel) breech. This system depends on only the inerta of the breech block to resist reward movement of the cartridge during firing. This system is used mainly with lower powered cartridges, as (A) the weight required goes up fast and (B) the amount of weight must be a exact match for the ammo for reliable functioning.
A locked breech weapon has the breach (bolt) secured (locked) to the barrel, until such time as it is released by a outside force.
Hope that helps.
Some guys like a mag full of lead, I still prefer one round to the head.0 -
i was more interested in what order and when things happen in a breech locking gun
SUBMARINE SAILOR,TRUCK DRIVER,RUSTY WALLACE FAN AND AS EVERYONE SO OFTEN POINTS OUT PISS POOR TYPIST e-mail:WNUNLEY@USIT.NET0 -
When the cartridge fires, pressure builds pushing slide to the rear. After about 1/4" travel, the barrel link pulls the barrel down, unlocking it from the slide which continues to the rear pulling the empty case with it. When it get far enough back the case hits the ejector knocking it out of the slide. When the slide gets to the rearward position, the recoil spring relaxes pushing the slide forward stripping another round from the magazine into the chamber.
When the slide pushes the barrel back into battery the barrel rises and locks into the locking grooves on the inside of the slide. Ready to fire again. Locked Breech.
You can't miss fast enough.0 -
That last description was for the 1911 45 automatic pistol which is similar in operation to many other auto pistols. It's an example of short recoil operation. There are other systems of delaying the opening of a breech such as long recoil operation, several arrangements of gas operation and delayed blowback systems. 0
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