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Thread: 585 HE -- Cases In Production --

  1. #11
    Gunco Member hubel458's Avatar
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    You can see from above posts I like Enfields and here is picture
    of how we set up action for long case and a singlestack magazine.
    We open bottom of action for length and use a lip type magazine
    insert to feed cases single stack. And lips are springy so we
    can load from the top.



    Here is the second gun I did years ago in the 585HE, an old style
    Ruger 77. And at that time I used the cases I made myself and
    they work great in the gun, high pressure loads, and extracted easy.



    Here is some math to show why I really like really big bores.
    There is term called Average Barrel Pressure, which is the average of
    all the pressures in a barrel, from the start where you have highest,
    called peak pressure. to the lowest at the muzzle when bullet exits.
    For high powered rifles average barrel pressure run 15-18000 psi.

    There is a formula that can be used to get Average barrel pressure
    fairly close if you know the muzzle energy.

    We multiply ME times 12 and divide by barrel cross section x length.

    Example a 458Win usually loaded to 5000 ft lbs, say in a 24" bbl.

    ABP = ( 5000 ft lbs x 12) divided by (.17 sg in x 24") = 15,000 psi

    Now you see there isn't a lot of room for big gains, as it would take
    peak pressures damaging to brass and gun, to get say 50% increase.

    Now example of 585HE in the 26" bbl we like, say a 7,000 ft lb load,
    a real moderate load in this case.

    ABP = (7000 ft lb x 12) divided by (.27 sg in x 26") = 12000 psi

    The bigger bore allows for a much larger potential,
    a 50% gain is easy to do.Ed

  2. #12
    Gunco Member hubel458's Avatar
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    Here is a few of the variety of bullets we found or know about
    to use in 585HE, about a third of them, from 440gr, to 750gr,
    to 1200gr, to 1600gr.



    Here is picture of what 200gr powder, in a case that had
    the powder settled, looks like.



    We now have more 585 new straight blanks giving a total of 9
    basic blanks, with long ones for guys setting up target guns.
    And a bunch more of the profiled barrels are being made now
    to go with new ones we got left. One which went on this BBK
    pictured, 3 on Enfields, one on FBW, one Ruger, 2 in PHs.
    Guys have used 5 of the new slow twist barrels. Ed


  3. #13
    Gunco Member hubel458's Avatar
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    There is a guy and his smith in AUS that has a reamer for the 585HE.
    And maybe another firm there that can get a bunch reasonably priced
    barrels imported in from the US. Our Mcgowen barrels are high quality,
    hand lapped, and only half of what getting them in from other places cost.
    Here is part of stuff that the guys have to work with..



    Here is picture of the Mossy 390 action, after I'd set up for the 585HE.
    Just to see how good the action is, and I have since set barrel back
    and made it into a 24ga FH. Just makes an easy to work with test gun.
    Being both use same size bore, and in 24ga with 3" chamber I can use
    577 brass for 24ga cases, using same Minie and jacketed as 585HE.
    58CAL IN ALL FORMS is where it is at, so to speak......Ed



    PS-We have longer barrels now for target work including real heavy ones
    of 1 5/8 inches, that some guys are working on getting bigger actions
    set up to use them in. .

  4. #14
    Gunco Member hubel458's Avatar
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    Here is a picture of the first 585HE to be done and firing,
    in Australia, owned by the poster, tankhunter on AR forums.
    Fellows there can get cases from Bertram. I can send
    dies and reamers.And can get dies from CH4D.
    There soon will be 3 reamers there.

    And now a company starting to make 585 barrels there.
    I have about 17 here, so no waiting here.

    Allan and Grant Swan. in Redbank, Queensland...
    allanswan at uplink.net.au.



    WE have cases with plain heads if guys need some for
    wlldcatting, necking down, and they can put on their
    own headstamp.Ed


  5. #15
    White Cracker 4thIDvet's Avatar
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    hubel thank you for sharing that. That is incredible, good job their. Creative, innovative, nice. Would like to have one but recent shoulder surgery says no.
    "Man needs but two things to survive alone in the woods. A blow up female doll and his trusty old AK-47" - Thomas Jefferson 1781


  6. #16
    Gunco Member hubel458's Avatar
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    We've put some of the 585HE bolt guns in composite and Hogue
    stocks, and they are rugged for extreme weather. And they
    don't break under heavy loads. Prices are nice and they have
    aluminum pillars and/or aluminum bedding blocks.
    And with their hollow butts very easy to add weight to take up
    recoil. If lead and epoxy added to a complete fill of the hollow,
    too much weight, so I found a nice cheap substitute.
    We now using rubber coated mouse balls that we have bunch of.
    They are steel with rubber coating, and the right weight.
    They add just the right weight and and wedge in good.
    And won't rattle with coating, and we hold them in tight with
    a piece of dense foam under butt pad.



    We get asked about how much speed potential we have. And
    we start by mentioning cases can hold 190-200 gr of ball powder
    with the bullets loaded out longer. And we have those heavy
    powder loads with 650 gr jacketed bullets, in the Enfield
    pictured I use as one of my test guns.



    And more fun shooting, using a pistol grip on one of the
    585HE falling block test guns. Real heavy loads try to spin us
    around like a weathervane.. Ed


  7. #17
    Administrator sniper69's Avatar
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    Very interesting. Thank you for sharing all of this information.
    "To show you how radical I am, I want carjackers dead. I want rapists dead. I want burglars dead. I want child molesters dead. I want the bad guys dead. No court case. No parole. No early release. I want 'em dead. Get a gun and when they attack you, shoot 'em."
    Ted Nugent - speaking at the NRA convention April 17, 2005

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