How do they make rimfire ammunition?

[Johnny_L.A]

The primer has to go around the rim. How do they do it? Use a damp primer compound and spin the case?

(For that matter, I’d like to see exactly how they make the cases. Extrusion, I know; but I’d still like to see it.)

[Gbro]

Try this link , It has a short video on how the cases are formed.
I have seen federal cartridges video on making rimfire ammunition and it is very interesting, but would be to traumatic to show on the TV show “How its Made”

[masterofnone]

Dammit Gbro, you beat me to it!

But here’s a link from the same site that describes the priming process.

[Gbro]

@masterofnone

Dammit Gbro, you beat me to it!

But here’s a link from the same site that describes the priming process.

A quite impressive site:). I will be spending more time snooping around there:D

[Johnny_L.A]

First: I was thinking ‘drawing’, but said ‘extrusion’. I meant ‘drawing’.

@masterofnone

Dammit Gbro, you beat me to it!

But here’s a link from the same site that describes the priming process.

Thanks for the links. I just found the rimfire priming link on my own, but it’s nice to have a direct link.

To ensure that the mix is uniformly distributed into the hollow rim cavity of the case, both downward and centrifugal force is applied during the spinning operation. A rotating spinner quill enters each case, causing the case to spin at high speed. The working end of the quill forces the wet mix toward the cavity and the spinning distributes the primer mix to uniformly fill the cavity.