Tapered copper .223 jackets

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Tapered copper .223 jackets

Post by eagle60 on Sat Sep 24, 2011 11:19 pm

My supply of emply 22lr cases has been used up while learning the ropes of making them into jackets for the .223. I could go buy a box of 22lr, do a lot of target practicing and have some more but I thought I experiment with making copper jackets from copper tubing. Don't know how well they will (or won't) fly yet but thought I'd post the progress so far.
I had a short piece of 1/4 in copper tubing that seemed to fit the bill so I cut off a piece that was .615 long. Made the punch a tad shorter than the tubing so that it would not bottom out in the die. Sharpened a 1/4 inch drill bit to a 45 degree angle and made the die.
First operation was to round over one end of the tubing that would become the bottom.

Next came the only annealing that was done.

Next came a series of four draws to lengthen and thin the jacket. I put a 1 degree taper on the punch. It is a witch to get the tubing off the punch without the taper and a good polishing. At present I am using some RCBS case lube which does pretty good.The dies are sized to reduce the jacket by about 3 or 4 thousandths each time.
First draw results.

Second draw results.

Third draw results.

Final draw. The raw jacket was at .224 outside diameter and .188 inside diameter. Just right for the core. Length was .750.

Next was flattening the bases and trimming to .715 for a finished jacket.
I seated a core in them, ran them through the point forming die, and did a final sizing back to .224. The one on the left looks a little odd because I ran it in a punch to be sure the nose was straight - I got a little happy on that one affraid Most of it ironed out but I don't think I will test with LOL!
It looks to me like the ogive starts too far forward but will have to shoot a few of them to see what happens.


They may fly like a boat anchor, I don't know.
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Re: Tapered copper .223 jackets

Post by Pathfinder on Sun Sep 25, 2011 9:50 am

OH WOW! They are looking really nice. The bases are nice and closed.
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Re: Tapered copper .223 jackets

Post by hawcer on Mon Sep 26, 2011 8:10 am

Excellent work. keep it up! Smile

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You are finally comfortable with your casting capabilities when you find yourself casting boolits with sandals on!
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Re: Tapered copper .223 jackets

Post by eagle60 on Mon Sep 26, 2011 4:37 pm

Thanks guys. I'll test them out as soon as I can and post the results.
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Re: Tapered copper .223 jackets

Post by scorge30 on Tue Sep 27, 2011 12:18 pm

Wow that looks good. IIRC Ammosmith over on YouTube there was doing a similar thing with copper tubing.

He started with a Harbor Freight mini cut off saw but quickly killed it as it is not designed or intended for production work. He bought another much more expensive and robust cut off saw, but I have not heard any reports of how the new saw is holding up.

FWIW I have a 3/4 full 5 gal bucket around here somewhere (house is total disaster, my reloading room had to get emptied to make room for my elderly Grandmother, so I have no clue where any of my shite is) of spent various rim fire rounds including some 17 HMR.

I was supposed to be making jackets with my 22 LR derimming dies but never got past the collecting of the spent rimfire hulls. Not sure when I will be able to get my reloading bench set back up.
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Re: Tapered copper .223 jackets

Post by eagle60 on Tue Sep 27, 2011 4:38 pm

Thanks Steve. That is what I'm using for now but yeah, it is no production machine lol.
I hope you can get your reloading bench set up somewhere and make use of those jackets! It's too much fun to stay away from for very long.
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Re: Tapered copper .223 jackets

Post by Reload3006 on Tue Sep 27, 2011 9:46 pm

thats some good lookn boolits Eagle
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Re: Tapered copper .223 jackets

Post by eagle60 on Tue Sep 27, 2011 10:01 pm

Thanks Reload. Yeah, they look a little better than that first batch of 22lr cases I was working with lol.
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