12ga, 10ga, 8ga, 4ga FH; 585HE, 700HE; Big Bores--

Discussion in 'Double Rifles' started by hubel458, Dec 2, 2011.

  1. hubel458

    hubel458 AH Veteran

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    About 416 cal bullets............

    The heaviest 550 gr for Extreme ELR probably be best 8 to 1 twist , in 416 caliber bullet,
    and 520 gr 9.5 to 1, and 470gr 10 to one, Some barrels I picked up are 10 to 1.......

    Now a novel idea is to lighten rear of bullet with small shallow hole drilled in base, might do better
    long range.which would allow 10 to one barrel stabilize the heavier 550 gr bullets for ELR.
    Making bullet nose heavier makes it more stable in flight, needing less spin,
    like our hollow base 585 cal minie bullets only need 48 to 1 twist, or less
    while out regular 585 bullets need about 24 to 1 to stabilise them..............

    The winner of the King Of 2 Mile shoot last week was using 416 Barrett with a 1 to 10
    twist, with a 500 gr CEB Lazer bullet, ...Robert Brantley, with Manners Stocks....

    Paul Philips was third with a 416...

    GOOD NEWS-- There is now an importer and seller of our 585 HE brass getting set up here,
    in US, hopefully will be in stock, few weeks........ http://bertrambrass.com .. .. Caleb Hallet..

    Have got another intermediate size action besides the Montana PH our guys working on,
    to do speed testingwith. It is big long REM style action that can take our 416 HSM, ED
     

  2. hubel458

    hubel458 AH Veteran

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    Experimental intermediate size action with the Montana PH, for comparison.

    It is an experimental action for our 416 HSM, to do our speed testing with

    and get a better action than Cheytac size actions, for bigger case ELR use,

    without going all way up to more expensive, huge actions.

    It is big long round style action that can take our 416 HSM, almost

    1.6" diameter action and .800" bolt, with locking lugs nearly as big as most

    BMG actions.... ED


    [​IMG]
     

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    Bullthrower338 likes this.

  3. hubel458

    hubel458 AH Veteran

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    Here is picture of the bolt from the experimental action,

    with our 416 HSM case in it. Note the amount of the

    base size of locking lugs, the amount of area on the bolt..


    [​IMG]


    Here is link to guy doing special 585 HE in the EU,

    Good pictures............www.585he.cz

    We tested intermediate action with a 700HE barrel we had here.

    Just temporary to test strength. 1000 gr over 3100..

    Action worked fine.. Ed.
     

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  4. hubel458

    hubel458 AH Veteran

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    Here is video of early water barrel test of the

    12ga From Hell, from years ago.




    Here is picture from that video..

    [​IMG]



    Here is the intermediate size action for 416 HSM with test barrel, .Ed

    [​IMG]
     

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  5. hubel458

    hubel458 AH Veteran

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    In 416 HSM got a 415 gr long target bullet 3800,

    with plain barrel, no brake, on intermediate action,

    Our 416 HE gets same 415gr bullet to 3300.Ed
     

  6. hubel458

    hubel458 AH Veteran

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    Here is picture of our 416HSM cases with screw in shellholders,

    for Ammomaster, etc, and slip in shellholders for regular presses

    Also have some for big LEE Classic and Smart Reloader presses..

    A 378 WEA MAG in picture for comparison...


    Second is stacks of 416 HSM, about a third fireformed

    and the rest to be fireformed... So far total about 1700, Ed



    [​IMG]



    [​IMG]
     

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  7. hubel458

    hubel458 AH Veteran

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    Bob Snapp, 90, the great Gun Craftsman, of

    Clare, Michigan, passed away Jan 28th....

    He was an esteemed member of the

    American Custom Gunmakers Guild,

    Being its president in 1992..He liked

    working with Martini Cadet singleshot rifles

    .Worked with guys testing armor long time ago.

    Maybe the 1st to do 20mm necked down to 50cal

    We lost a great friend,,,Ed
     

  8. hubel458

    hubel458 AH Veteran

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    .....


    It is possible rig up holders for many types setups.,

    About shellholder supply for big cases,

    RCBS and others make slip in holders for shotgun cases

    that can work or reworked for big rimmed rifle cases...

    Here are various sizes.......

    16ga-- .810" rim,........ 20ga-- .760" rim,....

    24ga-- .725" rim,....... 28ga .680" rim....

    Ch4d and Buffalo Arms also have these larger shellholders...


    We fireform the 416 HSM with 65 gr of medium speed

    surplus powder, with rest of case filled with farina

    and grits mix, with a play dough plug in the neck.

    It is loud, so we shoot it into big container through a barrel size

    size hole, so the sound is muffled, so it doesn't deafen us..


    It is great getting more companies making 416 caliber bullets,

    long target and bore rider bullets. Ed..



    ....
     

  9. hubel458

    hubel458 AH Veteran

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    Wonder if a PTRD with 5 ft long barrel is stable enough

    for ELR , rebarrel to 416 and use our 416 HSM, 500 gr bullet ....

    .Here is up north guy using 585 HE in a PTRD with inserts,

    Light load.....Inserts are in the shape of the 14.5mm case....





    HERE ia video, 585 Hubel Express and water jugs - slow motion

    750 gr with 155gr RE17, just a moderate load.....Ed


     

  10. hubel458

    hubel458 AH Veteran

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    20mm Vulcan is a big case that works ok, without having

    the sides made too thick...They have thinner sides

    than smaller cases guys are getting that have the sides

    made too thick and won't extract easy or work with high pressures.


    Here Barnard P Cheytac bolt that would do for our 416 HSM..Ed......

    [​IMG]
     

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  11. hubel458

    hubel458 AH Veteran

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    Got guys doing various 416 HEs..

    One just built a 416 HE, just been testing it a few days..

    And using 168gr of HBMG 475 gr CEB, tested it, in good

    conditions, 2 shots at 1800 yards and was within

    a 1/4 of minute accuracy...A few shots at shorter ranges

    had same accuracy. Ed..
     

  12. hubel458

    hubel458 AH Veteran

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    More about our 416 HSM from BMG brass, and
    our 416 HE & 460 HE from our 585 HE cases
    Got reamers for 375 HE, 416 HE and 416 HSM,....

    460 HE & 460 HSM are all spec'd, got HE reamer
    soon have HSM reamer...Our HSMs have a Wea type
    radius on the shoulder..

    The fellow that set up our 416 HE in an ELR rifle
    and got 1/4 min accuracy,
    They got some game out west over 1400 yds..
    .Here is the gun they set up.
    Using a K&P 34" barrel on a BAT action.....Ed

    [​IMG]
     

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  13. hubel458

    hubel458 AH Veteran

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    And have got 460 HSM specs setup, the impetus for that is some
    asking about one and new great line of 458 bullets CEB now has.

    It will hold more powder than the 416 HSM and will get
    a 572 gr as fast as 416 HSM gets a 475gr.....Ed..

    PS- Anyone asking about cases and dies for my 585HE we got them
    and dies and some barrels here, Bertram has thousands of cases..
     

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