How do they make .22LR

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Newton

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Dec 27, 2002
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Does anyone know what the manufacturing process is for rimefire rounds like .22LR, I'm darned if I can figure it out.
 
just simple extrusion process. Brass disk is pressed to shape, case is put into a centrifuge and a small bead of primer is put into case, case is spun at high speed and the primer spins into the rim. Then powder is loaded and a bullet is crimped on (sometimes not to well done though).
 
I believe they are made in either 500 or 1000 round lots at a time. Quality depends on attention to detail and good (expensive) equipment.
 
Actually, .44s are the offspring of .22s. B. Tyler Henry designed the .44 Henry cartridge (the first .44 metalic cartridge) by scaling up the .22 Smith and Wesson which today we call the .22 Short. That was the very first metallic cartridge with a powder charge.
 
Amazing, so they centrifuge the primer compound into the base.

I'd like to see that manufacturing process.
 
I'd love to see if the manufacturing plants allow for tours, like the local donut-making plant does.

I would really love to see the "life cycle" of a cartridge, from the copper/lead/zinc mines where the materials are mined, to the processes used to make primers and powder, to the actual drawing and forming of the brass cases, the forming of the lead/copper bullets, and the high-speed assembly of all the parts.

Manufacturing has always intrigued me, yet I've never really seen non-donut manufacturing in person.

/the donut factory would give you free donuts after the tour
//the Guinness factory tour in Dublin would give you a free pint
///would love to get a free box of ammo for taking a tour of an ammo plant
 
1. Rolls of brass strips are feed into a punch press and discs are punched out.
2. The discs are then sent through progressive punch presses and case are inspected.
3. Cases are inspected and cleaned
4. Solvent containing PETN is injected into cases and centrifuged.
5. Lead wire is feed into a swaging die, and the projectile is formed.
6. The projectile is then lubed and inspected.
7. The case, powder, and projectile are assembled.
8. The finished round is inspected.
9. Rounds are packaged and shipped.
 
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