Cupfire...say what?

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  • The Saint

    Black Powder Nerd
    Dec 10, 2021
    171
    Baltimore County
    Well, here's a weird one that walked through the door today. Eagle Arms .30 cupfire 6 shooter. I've read about these, but never held one until today. I'll likely never be able to shoot this due to the ammo being, well, nonexistent...but that's ok. Unless I figure something goofy out, this is a neat collector piece if nothing else. You just have to respect the ingenuity of the 1860s...
     

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    The Saint

    Black Powder Nerd
    Dec 10, 2021
    171
    Baltimore County
    I've debated trying and putting this thing back into the field...but I have no idea how I'm going to cobble together a modern .30 cupfire case. The bullet is not the problem...there's a mold for everything, these days. Brass? not so much.
     

    Threeband

    The M1 Does My Talking
    MDS Supporter
    Dec 30, 2006
    21,203
    Carroll County
    It's basically a sort of rimfire, so you'd have to prepare a priming compound and place it in the unobtanium cases.
     

    The Saint

    Black Powder Nerd
    Dec 10, 2021
    171
    Baltimore County
    It's basically a sort of rimfire, so you'd have to prepare a priming compound and place it in the unobtanium cases.

    Yeah, I know exactly how they work. Priming compound is easy...I just can't see myself making brass haha!
     

    JohnnyE

    Active Member
    MDS Supporter
    Jan 18, 2013
    3,880
    MoCo
    Well, here's a weird one that walked through the door today. Eagle Arms .30 cupfire 6 shooter. I've read about these, but never held one until today. I'll likely never be able to shoot this due to the ammo being, well, nonexistent...but that's ok. Unless I figure something goofy out, this is a neat collector piece if nothing else. You just have to respect the ingenuity of the 1860s...
    Are there any dimensions available that you can use to recreate the brass? Soon I'll be rolling my own paper black powder cartridges in .36 cal, but at least I have a template to cut the nitrated paper into which I'll throw the black powder and glue in some conicals and balls.
     

    The Saint

    Black Powder Nerd
    Dec 10, 2021
    171
    Baltimore County
    Are there any dimensions available that you can use to recreate the brass? Soon I'll be rolling my own paper black powder cartridges in .36 cal, but at least I have a template to cut the nitrated paper into which I'll throw the black powder and glue in some conicals and balls.

    If there are, I sure can't find them. The cupfire system only lasted a few years before it was gone, so what's out there is scarce.
     

    Threeband

    The M1 Does My Talking
    MDS Supporter
    Dec 30, 2006
    21,203
    Carroll County
    I think you could get the dimensions from the chambers themselves.
    Diameter X by Length Y, with a concave closed end and slight rolled lip at the open end.

    You just need ductile copper blanks and a swage.
     

    Blacksmith101

    Grumpy Old Man
    Jun 22, 2012
    17,659
    Here is a source of Priming Compound it is originally for reloading .22 rimfire cartridges.
     
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