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Thread: 12GA FH Slug Tester --

  1. #721
    Boolit Mold
    Join Date
    Sep 2017
    Posts
    4
    I'm trying to get 3-5 12GFH cases 3" or longer but no one is returning emails, and RMC is 3 months out. Does anyone have a few they would cut loose and help a shooter out?
    Primitive weapon season is 1 month out! meauxcg@aol.com
    Thanks guys

  2. #722
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    My cases all gone,

    I just got some lead to sell, big bunch to sell, quit a few batches.

    will sell 40 lbs including delivery for $100..Ed
    Last edited by hubel458; 10-02-2017 at 12:51 AM.

  3. #723
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    A 585 HE ...shot with moderate heavy load......

    https://scontent.cdninstagram.com/t5...09533184_n.mp4


    Here is a 375 HE target gun set up, by Asteroid Precision...




    Here is video of it being tested... And with a 350gr bullet about 3450-3475,

    bolt opened easily with one finger...And he's just getting started

    and is checking on better powder, Ed..



    https://www.facebook.com/AsteroidPre...location=group

  4. #724
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    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.....

    https://www.youtube.com/watch?v=tyS9zZ8ElJA


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




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


  5. #725
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    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.


  6. #726
    Boolit Master
    Join Date
    Apr 2017
    Location
    Minnesota
    Posts
    489
    I've been reading a lot where you were testing different powders in both plastic shotgun cases and your own 12GA FH cases, and it is very interesting. You mention using RE 17 a lot, and of course SR 4759. I was also reading about some success with IMR 4227 in plastic hulls. Is there a reason you decided to go away from that powder?

  7. #727
    Slug Master
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    Jul 2006
    Posts
    845
    4227 didn't always give good ignition if powder and case got cold.

    That is when we checked dozens of powders and found RE17..Ed

  8. #728
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    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..



  9. #729
    Slug Master
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    Jul 2006
    Posts
    845
    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.

  10. #730
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    Guy sent thick sided 375 case, next size base diameter up from Nyati.He said,
    'Yes I ran them in a ___________ rifle built by ____, the best I
    could get was 44000 psi, any more and they were stuck''

    Big bore guys. other forums over the years related that trex/african case in 585
    size, thick sided cases, stuck when they loaded them over 45k psi.

    Another just sent us, thick sided 375, long case, same base OD as our 585 HE,
    416 HE, 375 HE, and Mitch's 375 Lethal, and the thick ones stuck over 45k psi.

    Now you can fill those cases up, with ultra slow enough powder so they won't
    stick, but powder is too slow for max speed. Might get a little more
    speed, with thick sides case, but case got to be 4- 4.5 inches long..

    . Anyone needing a sectioned case of the ones I made the first of my 585s from,
    contact me, if they want to get a general idea of what case side thickness should
    be, in Gibbs size cases on up to about trex and 375 VM size case diameter.

    Here is pic of our 585 based case next to brand X and thick ones, both have
    same sharp, thinner, corner, where transition from heavy angled corner, to the
    side, the carbide draw rod could easily be reshaped with diamond wheel,
    just by grinding off sharp transition corner. Then sides would be perfect.., .




    Here is picture of 416 HE in a Choate target/varmint stock guy is doing,
    using long action BSA U9 action.Setting in stock ready to do bedding..Ed


  11. #731
    Slug Master
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    Jul 2006
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    845
    Here is picture of thick 375 case sent to me, with thick sided trex case, and our HE case,
    The thick 375 case is .050" bigger OD base, but inside is no bigger than HE cases..
    These thick sided 375s stuck for the guy using them, when loaded over 44,000 psi....



    Got guys asking and doing it, to do 416 HSM case for BMG actions, so leaving rim same,
    as the original bmg rim, so will neck them, fire form to the longer shoulder, like the others.
    Base a little bigger, Shoulder same diameter, same 30 degree slant, neck will be same..

    Inside of case still has close to same shape, volumne within 3 % as ones we slimmed down more.
    Some want to use bmg actions and can't wait for intermediate actions, or already have bmg action.
    And they are really getting interested in the complete line of 416 CEB bullets now being done
    clear up to 550 gr...

    So there will be 3 versions, one for actions .750" bolt, one for .800-.850" bolt,
    And one for bigger bmg bolts. The ones for BMG called 416 HSM2 ..

    Here is 416 HSM guy working in a Montana PH, in a heavy thumbhole target stock. Ed



  12. #732
    Slug Master
    Join Date
    Jul 2006
    Posts
    845
    Here is sectioned 585 HE case in the middle, we first made from

    another case, years ago before we had factory run of brass and

    it had perfect thickness on the sides and inside corrner.

    We could fire them many times without sides thinning..

    First case is factory run of our 585 HE, 3rd is case that is too

    thick of sides and sticks at high pressures..



    Pic of our factory run cases necked down to 375 and fired 4 times

    at high pressure on the right, with unfired case on the left.

    Our case is not perfect but does work...Ed


  13. #733
    Boolit Master appleseedgunsmith's Avatar
    Join Date
    Nov 2008
    Location
    Tennessee
    Posts
    200
    Hello, been doing more work on my own 20g heavy slug loads. I designed the old West molds 12bore bronto bruiser. Now I'm working on a 20ga rifled highwall. Barrel is a 600ne pac-nor heavy blank. Action modified and barrel octagoned by John Taylor. Current load is hardcast 756gr(old loads used commercial obtained same mold design weighing 720-735gr) modified Lyman 57730 @ 1250fps. Bpi CSD wads used as sabot.

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    Last edited by appleseedgunsmith; 05-30-2018 at 12:53 PM.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check