222 Low-Drag

Discussion in 'Small Stuff--22s, 20s, and 17s' started by deadduck357, Jan 16, 2019.

  1. Evan

    Evan Gold $$ Contributor

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    That would be almost funny. The whole time deadduck has been using a 22-250 to generate the chrony numbers and mocking everything up for the pictures with some 222 brass he had laying around.
     
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  2. paperpuncher

    paperpuncher Silver $$ Contributor

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    Bore Rider??
     
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  3. Coleridge

    Coleridge Silver $$ Contributor

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    Can you please let us know how a self proclaimed novice stumbled on something the greatest minds in rifles & physics has missed for well over 100 years of cartridge designs? Think most would guess a copy of other designs into "a different" parent case at best (if not an explanation would go LONG way in your "case" -pun intended). Just cause you "think" a shape or pitch "alleviates pressures" doesn't mean it does. With good brass & tight chambers, about any cartridge will hold excessive pressures pretty well. But the velocities you showed with the charge you listed is a bit optimistic at best---> dreaming of safe operating... Not matter what shape or trick - there is no free lunch. To create energy, you have to consume fuel - no way around it. (more pressure or more powder)

    BTW- The Ford Pinto was designed to be a safe & efficient mode of transportation...
     
    Last edited: Feb 11, 2019
  4. steve123

    steve123

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    There was a time I had nearly the same cartridge in mind for my AR so I could shoot the heavier higher BC longer bullets like the OP is doing. But I was afraid I would have been dissatisfied with the velocities I would get. I like shooting at farther distances so sometimes a heavier bullet can't be driven fast enough to make up for it's extra BC.

    I also contemplated having a 223 reamer made with a short neck so I could use the 75 ELDM.

    The answer back then became a 6mmFatRat.

    Then the 224V came out. Now I'm waiting for Lapua brass in 224V to become available.

    Plus I have a 223AI bolt rifle so...

    Anymore I try not to push the brass like I used to have a habit of.

    But these projects like the OP is doing are interesting and fun to watch.
     
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  5. snert

    snert Gold $$ Contributor

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    Am I reading it wrong (and I may be) but after discussing datum, the OP seems to be talking about rim? Confused. Are we sure he is measuring the correct place and with the correct tool, and understanding what it means when that point "grows"?
     
  6. Evan

    Evan Gold $$ Contributor

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    No. Hopefully my description made it clear, but we're all flying blind here which makes advice or direction difficult. If he dropped all the details right now, and someone wanted to copy him, they'd be a MINIMUM of 12 weeks away from having a reamer in hand ready to cut a chamber. More likely 16 weeks given my past luck with the reamer folks and what I've been reading. If the copycat isn't a gunsmith then the time to a completed gun is reasonably even longer. Not sure why the secrecy, but if deadduck doesn't wanna share then he doesn't have to.
     
  7. deadduck357

    deadduck357

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    The reamer print is .3769 at .200.
    We've been watching bolt close and lift very closely, all has been easily opening.
     
  8. deadduck357

    deadduck357

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    [​IMG]
    Left is from the bolt gun. Yes i know it needs to be bushed but can't send it off right now, need it, will do when I'm testing more with the other rifle.
     
  9. deadduck357

    deadduck357

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    [​IMG]
    I wouldn't waste y'alls time or my money.
     
  10. deadduck357

    deadduck357

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    Very clear and very helpful.
     
  11. Evan

    Evan Gold $$ Contributor

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    *thumbs up* :)

    I was mostly just teasing with the others over your relative secrecy. I look forward to more results!
     
  12. xswanted

    xswanted Gold $$ Contributor

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    What is the right from? I can’t remeber if you’re shooting this in an AR as well.

    It doesn’t look too crazy.

    Are you positive your chronograph was reading correctly?

    I guess I’m still befuddled as to where this speed is coming from.
     
  13. Lucky Shooter

    Lucky Shooter Gold $$ Contributor

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    I'd still like to see your reamer print-----always interested in anything better for bolt guns.

    Any truly new improvements with the 223 head sizes might be hard to accomplish.

    As an old feller once told me-----"son, this ground's been plowed over 15 times, there
    ain't no more bird nests on the ground".

    Do you think your new round might be a better deal for bolt guns ?

    Please keep us updated.

    A. Weldy
     
  14. deadduck357

    deadduck357

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    Had a theory, put it to paper, ran many figures, got some questions answered and advise, several models, many papers later took the final specs to my gunsmith, we made a prototype, got cartridge specs to print. Oh and from reading here over the years.

    I would never sit in a Pinto much less use it for transportation. :D
     
  15. deadduck357

    deadduck357

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    Verified with a Oehler 35P.
     
  16. Lucky Shooter

    Lucky Shooter Gold $$ Contributor

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    Is there any chance you might have been known as Mike ?

    A. Weldy
     
  17. deadduck357

    deadduck357

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    No.
     
  18. Coleridge

    Coleridge Silver $$ Contributor

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    ][​IMG]
    Those cases look fine. If you actually broke 3K with them in a short barrel, you have rewrote physics and need to work for NASA...

    If that being the case, I would be VERY interested in seeing your "figures". Actually without something more than the 5 pages of "I've created something spectacular - but not going to tell you about it" info so far... I'm done with this thread completely.
     
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  19. deadduck357

    deadduck357

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    [​IMG]
    Aero M4E1 upper & lower
    Shilen Match barrel 20" 1-7
    Superlative Arms .875" Adj. gas block
    Midwest Ind. SLH 12.625" handguard
    Velocity trigger
    Toolcraft BCG
    Geissele SCH
    ALG lower parts kit
    Magpul MOE-K2 grip
    Magpul PRS Gen3 stock w/rifle length buffer, spring and tube.
    Nikon X1000 4-16x50SF scope
    Badger Ord. Unimount

    [​IMG]
     
    Last edited: Feb 13, 2019
  20. deadduck357

    deadduck357

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    222 Low-Drag with Hornady 88 gr ELD Match bullets.

    [​IMG]

    Worked up some loads for velocity testing out of bolt gun.

    Hornady 224V 88gr ELD Match has a MV of 2675... out of 24"


    [​IMG]
    222 Low-Drag 88gr ELD Match - 20"


    Federal 224V 90gr Gold Medal MK has a MV of 2700 out of a 24"


    [​IMG]

    Still more

    [​IMG]

    Ran out of case capacity - no pressure signs. Will have to try another powder to see if any more velocity is available.
     
    Last edited: Feb 20, 2019

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