Mystery cartridge

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damascusdave

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I ran across these two cases in a bunch of stuff I had kicking around. Anybody know what they are?
DDave366.jpg
 
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Dimensions

I think some dimensions would help ID it. - nhk

It is about 1.6 inches long with a radiused shoulder that appears to be more than 35 degrees. The cases were made from 308 and 300 Savage brass. Oh and it is a .243 bullet.
DDave
 
looks to me like the case that harvey miller was useing years ago
 
You got it

Some of the 6X39 brass that we did were 300 Savage

Actually I was just being a bit obtuse, Bill. Just wanted to hear from someone like you.

Yep those are some of the cases you made with Allan King. I bought his old Heavy Bench gun through Al Mirdoch back in the mid 80's.

I eventually sold the gun with the 308 barrel on it and kept the 6x39 barrel to have rechambered to 6 PPC. Had I been able to foretell coming events I would not have modified it. Wouldn't the 6X39 be the darling of the long range bench and prone boys today with up to 105 grainers. I know from shoot results that Allan shot some of Terry or Al's McCracken bullets made up as 83 grainers, and I think that barrel is a 1 in 16 twist.

Al always said there was a set of forming dies out there somewhere but I could never put my hands on them.

I gave the loading dies to Al to sell for some reason, along with the rest of the brass, and I have no idea where that all ended up after he died.

Thank you so much for responding. That case and caliber are truly one of the great mysteries of benchrest shooting and younger shooters need to know about it.

Dave Wilson
 
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That case is a 6 MCR. In the 70's the southwest region director was a fellow named Harvy Miller. That is his case.
 
Nobby Uno

Dave,

You could try asking Nobby Uno. Al used him lots as his smith back in the late 80's.

Keith
('89-94 Namaka shooter)

Nobby did all the smith work on my two Hart actioned guns. The barrel that was originally chambered for the 6X39 is now on my Hart 1A action as a 6PPC .261 neck (bad idea) and turned down from 1.35 to 1.25 diameter so it would fit in the sleeve on the action. Sadly I have never fired that gun. He also did the 2 barrels for my plain action, one a 1 in 13 and the other a 1 in 14 twist. Come to think of it I don't believe I ever used the 1 in 14 barrel either. I hear cut rifled barrels are all the rage again. Those two barrels are Matcos with 5 grooves, cut rifled.

You know Nobby was one of the first to try the 6BR. I remember he came to a shoot with one he had just chambered and I know he did not have a sizer die and I am pretty sure he did not have a seater either. He just turned the necks to give a bit of clearance and then I think seated the bullets with an arbor press as straight as he could (do not try this at home).

I was just talking about Nobby a while ago and wondering where he ended up. Last I heard of him he was working for Saskatoon Gun Works, but I think he moved back to B.C.

BTW I also have a 25/06 that was completely built by Ted Gaillard. I would love to try it some time in a Hunter Class match.

DDave
 
how does this case compare to a dasher? looks a lot alike!! Lee

45 degree shoulder with a radius, otherwise pretty much identical. If I had the Lapua brass back then I would not have had the barrel rechambered.
DDave
 
The 6 X 39 that Allen and I used, through some of whatever, became the Remington BR. Those barrels were actually made by Clyde Hart, I know, we paid for the 1 in 15 and 1 in 16 twist buttons that Clyde used. Up to last year I still had the RCBS forming dies and a Ferguson seater and sizing set. We started off with .308 brass but moved over to the 250/3000 because the walls were thinner and would form better. It was the most actuate cartridge I had ever fired but we did not have the technology at that time to just bump the shoulder back and squeeze the base in a little. I could go on but it would be too long a story. We started off with a 1 in 12 twist, because Allen's idea was to get .308 ballistics with 6mm recoil, (this came about after Allen built a 10 1/2 lb .308) :) :)
 
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