Repriming an original copper 38 rimfire case

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ndnchf
Posts: 247
Joined: Mon Aug 11, 2003 4:03 pm
Location: Virginia

Repriming an original copper 38 rimfire case

Post by ndnchf » Tue May 04, 2021 2:59 pm

I just conducted an experiment to see if it was possible to successfully reprime an original copper 38 rimfire cartridge case using the Prime-All kit available online. This is something that is not realistic to do for regular shooting. It was just to see if it was possible. I do not advocate shooting 100+ year old copper cartridges. This was a once fired, or attempted to fire empty case I had. Take a look and give me your thoughts - thanks.

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Woody
Posts: 5748
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Location: Freetown, Indiana

Re: Repriming an original copper 38 rimfire case

Post by Woody » Tue May 04, 2021 6:24 pm

Interesting experiment.

Like you, I'm not too sure I want to fire a re-primed case in a rifle though.

Woody
Richard A. Wood
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ndnchf
Posts: 247
Joined: Mon Aug 11, 2003 4:03 pm
Location: Virginia

Re: Repriming an original copper 38 rimfire case

Post by ndnchf » Thu May 06, 2021 3:53 am

Another thing I learned doing this was how soft the copper case was. I didnt hit the punch that hard, but it really squished the rim. More than I expected. It shows why these soft copper cases were not suitable for large, higher power cartridges. The development of brass cases with semi-solid and solid heads was a great leap forward in development.
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77 sharps
Posts: 276
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Re: Repriming an original copper 38 rimfire case

Post by 77 sharps » Thu May 06, 2021 4:21 am

Most likely fulminate of mercury was used to prime it originally. The mercury will attack the copper making it prone to splitting.

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