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Thread: 12GA FH--Hairy Shotgun/Rifle--

  1. #71
    Gunco Member hubel458's Avatar
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    See what's possible, original Savage 210 action/stock
    the one I have our long case in. You can lengthen
    magazine in the plastic stock for up to 3.5" RMC brass
    cases, also 3.5" plastic cases. And you can open up
    bottom of the action to match, and the other things
    I did on the port, bolt travel, etc to feed cases.
    I did mine with heavy wood stock in singleshot.
    Using original plastic stock you weight the hollow butt.
    Trigger assembly on these is back to leave space for this.
    In picture you see stock original and stock mag longer.
    Second picture is a 3.5" brass case and slug overall
    length 3.7", in longer magazine. Brett in MN, who did this
    first used the regular follower and mag spring ok,
    it feeds ok for him. .. Ed




  2. #72
    BANNED SlugWhip78's Avatar
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    Awesome work!

    One question, haven't aluminum slugs been tried before in ballistic history, and how have you overcome problems of abrasion against the bore?

    Thank you.

  3. #73
    Gunco Member hubel458's Avatar
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    I don't know for sure on rifled barrels, as I haven't tested
    them yet. I'm sure from what I've seen military do
    with AL sabots that they will do ok in smoothbore. Ed

  4. #74
    Gunco Member hubel458's Avatar
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    Info to help loading BPI sabots in plastic,ok to use plastic
    overwad over powder, but should use cardboard card and
    nitro wads above that below the BPI sabot. Sabot doesn't
    tear up and accuracy much better. Personally I use
    cards over powder and nitro wads, And with used cases
    roll crimping onto the thin edge of sabot is uneven, so with
    my used cases I set the sabot and slug to right height and
    just redo the 6 point star crimp real hard, and the middle of
    all the crimp sectors set right on the flat nose of the slug
    in the sabot. I also do the same with RG's 715gr hollowpoint
    with the crimp sectors right on the hollowpoint in used cases.
    Roll crimping holds RG's slug in ok but its taper of the ogive and
    smoothness it doesn't open crimp all the way around when
    fired. The star crimp set slug at same height so you can get
    the same amount of powder. With RMC brass these are not
    problems but with brass to get good feeding from mag rounding
    front edge of mouth helps. Sectioned picture of RMC on right
    next to our long original case to show how well it is built
    thick and strong. One of cases has 20 firings, still good..Ed


  5. #75
    Gunco Member hubel458's Avatar
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    What others are doing hopping up loads and experimenting.
    Brett in MN uses a Mossy 835 12ga smoothbore turkey gun, but
    it is backbored 10ga size all the way out to end and has 10ga size
    choke, and he uses 12ga AQ 441gr slug with locked on basewad, from
    BPI. Using top rib bead sight only he can hit a pail 5 times in a row at
    70 yds.Amazing accuracy for overbored barrel. He uses BPI X12X seal
    plastic wad, two 1/4" white felt wads, thin card then the AQ slug,
    with 65gr of Longshot getting 2200 fps. 3.5" new cases with
    roll crimp.......I asked him check it with a scope on it sometime.

    NFG from Greybeard and Shotgunworld with pump Mossy and 18.5"
    with slug barrel. He gets a 525gr Lyman over 1800 fps with
    80gr of 4759/4227 powder. Hard alloy mix Lyman and shot one through
    17" of pine. Shown in the pic below it mushroomed to .800" and only
    lost 8gr weight. It is a wasp waisted slug that is shot from a 12ga
    regular WW12 shotcup. The skirt of the slug collapsed into the underside
    of the nose. Many guys say that these are as accurate as most
    other stuff used. He used 3" plastic, PGS wad over powder and
    WW12 wadcup with slug it. He cuts wadcup petals back to length
    of the Lyman.In pic on left you see the Lymans with hollowbase up
    and the shape of it when starting out.

    Ok I am going to get Lymans to test and Longshot to test.
    Got to see if the Longshot will get further up in velocity
    than Blue Dot. Ed


  6. #76
    Gunco Member hubel458's Avatar
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    Here is a Savage 210 with bottom of action opened up
    toward the back, to take cases with 3.5" overall length.
    Slug Warrior on Shotgun World did it. Is similiar job the
    Brett in MN did, but he made his opening 3.7". I measured
    mine and they can be opened to 3.95". They also milled
    the rim guides back for controlling case feeding on longer
    cases. Ed


  7. #77
    Gunco Member hubel458's Avatar
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    Here is information and reason for keeping and milling
    the rim guides back for controlling case feeding on longer
    cases.Rim guides are angled in from the sides of the opening
    toward back. As the bolt pushes top case in the mag forward the
    back of case and rim comes to where the tapers widen out so
    the case then slides up in front of the bolt.I'm fixing up my
    2nd Savage I have set up for my second 700H 3.25" belted case.
    Just to see how it will work and along with other guys
    doing it, get the info out to people.
    This work on the stock/action can be done in a vertical
    mill or good drill press. To use 3.5" plastic the opening on
    the action and magazine needs 3.25", for 2.875"" brass long loaded
    3.5", if 3.5" brass about 3.7", if 3.5" brass long loaded, 3.95".
    By long loaded I mean a slug like the Dixie 600gr that protrudes
    up to .4".The 730 gr flat wide nose slug protrudes 1/8".
    You also have to widen and smooth the ramp going into the
    front bridge so case lifts smoothly on the way into chamber.Ed

  8. #78
    Gunco Member hubel458's Avatar
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    We get asked about putting brakes on the NEF Ultra.
    There is the concept called the internal brake that works
    nearly as good as expansion brake, with less back noise.
    Rob on AR did a couple with bunch of holes in the barrel
    in the end with the last 1.5" bored out .025" where holes
    go. Also many want more velocity in NEf and I added on
    a barrel section to mine. Combining Ideas we add smooth
    9" section of bore extension, that is same as groove diameter
    and 1.5" end of that for internal brake. Eight 1/8" holes
    top and same 45 degees to each side.And we have over
    a 100 fps in velocity gain. And with card or wad behind load
    it will seal pressure going from rifled section to smooth.
    And these types of holes won't bother wads or sabots.
    My extension is a foot longer and gets 150 fps extra.
    No need for brake in mine as the gun is 17 lbs with extra bbl.
    Here is Rob's two he fixed up, and is shooting.He has
    them reamed out longer for long 3.85" case, weight added.Ed


  9. #79
    Gunco Member hubel458's Avatar
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    Here is a picture of porting holes in a 10ga NEF
    heavy long smooth barrel. Bbl 30" and 1.080" muzzle
    diameter behind the screw in choke area. This come
    with slightly extended screw in choke and is first
    10ga with long barrel as heavy as my NEF 12ga FH
    short barrel was.. OR the short NEF 10 gauges
    with heavy barrel..It came with full and mod chokes.
    The other 10ga I tested earlier, only .960" at muzzle.
    I cut choke off and put it back in leaving the barrel
    an open bore for slugs and leaving an area 1.2" long
    for an internal brake to drill all the holes in like
    Rob did with NEFs in his picture. Now the 1.2" long
    area where holes are is bigger than needed for 10 ga
    so a reamer in the making will solve that and solve a
    major big bore project for me and others who asked
    me about using the short NEF 10ga for upgrade, which
    I didn't encourage putting all that work on a short
    barrel gun, with the amounts of powder that will be
    burnt in....are you ready.......THE 8GA FH.......
    I have 8ga FH loads tested in reworked Enfield.....Ed


  10. #80
    Gunco Member hubel458's Avatar
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    More info on the heavy barreled gun we plan on
    making 8 gauge from. Nef SB2 103, 30" barrel,
    regular stock. 220 bucks. 100 bucks for shop to
    ream out to 8 ga smoothbore. Needs the 80 dollar
    thumbhole stock. Nice deal for a modern 8ga, using
    heavy duty plastic 3.3" long cases. I fired 6-8000
    ft lb loads in one I made on Enfield, 4 times reloaded
    without resizing cases.
    Here is other project suggested by Boomie
    on the AR big bore forum, the 16GA FH.
    Cases made by me from bmg brass. Took 5 swagings, and
    two turnings on my case spinner lathe.Two Annealings
    Got couple cases made, in picture our 3.5" case and factory
    16ga plastic case slug load. I'm getting test gun working
    now and as for a supply of cases you all will have to
    get with RMC if you want to rechamber a 16ga..Ed


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