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Thread: 585HE-12ga From Hell Guy

  1. #61
    Join Date
    May 2014
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    Here is recap simple setup to get faster loads with 12ga sabots

    & slugs, Example using break actions...., reaming chamber

    in a 12ga break action to 3.5" with a 3.5" 12ga reamer, that isn't

    something needing special order, and use 3.5" plastic cases , or

    get 3.5" brass cases made. With mag shotgun primers and

    our slower powder loads you can get a quarter more speed,

    which gives 50% more energy...

    585 Hubel Express video, 190ft/lbs recoil, heavy load, gun little light.....

    Another view of Asteroid Precision's.... 375 HE target gun,

    Here is our 416 HSM we are developing next to 416 Barrett, Ed

  2. #62
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    May 2014
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    Here in picture of the cases, are shown the steps in making

    our 416 HSM case, from BMG brass,, Ed

    We might have a company that is doing a bolt gun with an action

    between BMG size and longer rifle actions used for 375 HE,

    375 Lethal, and Cheytacs.. To use for our 416 HSM without

    having to do extreme rebating of the rim.

    Here is picture of 620 416 hsm cases half done. Done on cnc ,

    that slimmed them down, cut new rim and extractor groove.

    There are over 500 more at cnc getting done now, plus we have

    1000s more bmg cases we make them from, when needed..

    This case is public domain and if anyone wants to make

    them we can give the steps involved...Ed.

  3. #63
    Senior Veteran weasel_master's Avatar
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    Mar 2007
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    Always interesting to see updates in this thread.
    Czar of all the Michigans
    In memory of John

  4. #64
    Join Date
    May 2014
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    For big long cases our testing is showing that the 416 easier to get powders to work with, less problems ..
    Maybe building a target gun,don't have 375 barrel all ready, maybe go 416....

    We got cases, 416 HE and 416 HSM, as well as 375...
    CEB and others will have bullets...CEB will be doing .416 in 450gr, 475gr, 500gr, 525gr and 550gr

    Got sent 5 thick sided sample cases, same OD base as 585/375.416 cases, same belt, just .180" longer,
    did a 416 HE, chambered extra barrel , cases stick over 50k. They have about .042" total taper, .021" per
    side, when I necked couple to 416. That is a lot of taper , twice the taper of my 416HE...hanging up at 50k..

    I could maybe go to 65k with these if we made taper with ..012" - .016" more taper to each side, but that is
    no way to build target cases. I'd have to crunch down case shoulder diameter. And would look like 30-30.

    And crazy part is, the case has enough brass material to thin up sides and stretch them way out to 4 or
    more inches,, They weigh 150 gr more than our 585/375/416,, but with real thick sides they actually
    hold less than our 416 HE with thin sides, that is .180" shorter...Our case does 65k ok without sticking..

    And we can make super long 4" cases work if we had means to get them built, as we have
    15 powders slower than HBMG.Here is pic of thin and thick sided cases, sectioned for comparison.Ed..

  5. #65
    Join Date
    May 2014
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    Here is a drawing depicting the layout of thick and thin sided cases,
    like my 585/375/416 HE thin sided ones and the thick one in picture.

    And my 585 case is not perfect, as where it transitions from the
    heavier corner to the side it isn't gradual, so case separates there
    shortening case life. There are others made that way including brand X.
    The dotted line is what it should be............

    Others have sent cases to section and look at, that are built thick sided and they
    stick also for the folks, If a longer case with about 5 sq in of side surface sticks and
    don't spring back, the coefficient of friction is about .01 then the pull needed to move
    it is 2500-3500 lbs..That is for big cases with normal amount of slant to the sides.

    Here is picture of six nyati and gibbs size cases sectioned.. the5th one is present 585 HE
    and 6th is thick sided version. 1st 600 OK which essentially nyati basic case left straight, belt added

    In the picture the nyati gma is one we built most of our first 585s on. Before we had factory run.
    Reworking made it in size that is my 585 HE, but that brass had the sides of perfect thickness,
    not too thick, but thin without sharp transition my new factory 585s had, they last forever as 585s......

    Fourth one is an older nyati case I used to make about 10 of my 585s from,had thin sides, heavy corner
    and sharp transition from the corner, tested 20 years ago, and they would separate after 4-6 hot loads
    as 585s, my factory 585 with right powders, as a 585 will get 10 hot loads, and necked down to
    416/375 4- 6 hot loads, right powders used, Moderate 577 equivalent, factory 585 at least 20 loads..Ed.

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