Title pretty much says it all. I'm curious about the process of making new rifle and pistol brass. Anyone have a good (or even a somewhat good) link to the info?
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April 30, 2003, 10:29 AM
Real quick, it's a complex, 15- or 20-step process. Until somebody gives a link, try the various ammo companies' websites to see if any of them show the sequence. I know some of the reloading manuals show pictures of it.
Even with modern automated equipment, it's amazing that new brass sells as cheaply as it does.
April 30, 2003, 10:55 AM
There are three methods in order of most used to least:
Drawing, impact extrusion, and turning bar stock.
April 30, 2003, 02:13 PM
Saw a neat display at a Cabela's one time that covered this.
I had the same thought that Art just expressed. Basically, they manufacture a bunch of little brass cups with thick walls and slowly work them into longer brass tubes and then cut/form them to size and then extruded some more and then cut some more and then ...
Very amazing process.
May 5, 2003, 10:28 PM
Typically it's done by back extrusion. A slug of brass (cartridge brass 70Cu, 30Zn) is put into a female die then a male die is pressed into the slug. The brass then flows up along the male die forming a cup shape. This is done a number of times with annealing steps in between. Also in the process the primer hole is punched or drilled , the rim is machined.
May 8, 2003, 02:04 AM
Thanks for the great replies guys! I whipped up a quick graphic in photoshop, close to what you guys are thinking?