More wildcats coming from Allen Precision.

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Fiftydriver, Jan 18, 2011.

  1. Fiftydriver

    Fiftydriver <strong>Official LRH Sponsor</strong>

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    Well guys, its been a while since my last wildcat was released and to be honest, have just been working my rear off trying to catch up a bit. We have made good progress but still alot of orders to get out the door.

    Still, I decided to move on a couple new wildcats from my shop. These will not be for everyone, infact, these are mainly for my entertainment but some of you may find interest with them.

    The first will be called the 510 Maximus.

    This wildcat has been on my mind since the 510 Allen Magnum was designed and released. Basically, its very similiar to the 510 AM other then the neck is shortened from roughly 0.620" down to 0.375". This however is not done by trimming the neck, instead by lengthing the case body. Yep, thats right, a DRAMATICALLY longer body. The 50 BMG has a very long neck, some say that is good, for a single shot its really all but useless. I decided to increase the length of the case body which should add at least 25 grains of useful powder charge capacity to the 510 Allen Magnum or roughly another 10%. Should easily add up to 100-125 fps over the 510 AM performance which right now is basically 3000 fps with 750 fps.

    This weekend I set down and finalized the reamer specs I wanted and sent them off for production with JGS. Other then the longer case body, I also increased the body taper to around 11 thou per inch so that with high pressure loads, it will extract even better then the older 510 AM design which already extracts pretty darn well with upper pressure loads.

    The other wildcat, is basically a 510 Allen Magnum necked down to 458 caliber and neck shortened to 0.375". Case body taper is also increased to 12 thou per inch of case body to allow maximum pressures to be used and still have good extraction. The 510 Maximus is simply a test in shear hammer power. The 458, if it produces what we are expecting it to, will take things to the next level even over the likes of the 338 AM and anything else for that matter. Lehigh bullets has made me some prototype 550 gr 458 solids which are predicted to have a BC in the .9 range. The computer models are predicting up to 3500 fps and possibly slightly more depending on barrel length with this new wasp-waisted hybrid borerider bullet design. They tell me the alloy this bullet is made with will hold the lands at +3500 fps.

    IF we get this, we will only need 13.75 moa to dial up to 1000 yards from a 100 yard zero. That would compare to 20.0 moa for the 510 Allen Magnum and 24.5 moa for a top end 50 BMG match load all using the 750 gr A-Max.

    In the smaller extreme ballistic performance wildcats, my 7mm AM with 200 gr ULD loaded to 3300 fps needs 16.0 moa. Which is exactly the same for the best 300 gr SMK loads in the 338 Allen Magnum.

    Rocky Mountain bullets has also shown interest in possibly making an aluminum tipped lead core bullet in the 550 gr range that would also offer a BC in the .9 range.

    Again, these are not going to be big sellers. These are just two wildcats that I have wanted to do for a while now and figured I better get on it. Much more to come late this summer. Anyone with a 50 BMG single shot that has a conventional barrel to receiver fit could easily rebarrel to either of these to wildcats. Will keep all of you posted.
     
  2. MT4XFore

    MT4XFore Well-Known Member

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    Hmmmmmmmmm, getting back to the ole nickname, huh Fiftydriver!
     

  3. Rocky Mountain

    Rocky Mountain Well-Known Member

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    A 458 on a 50 BMG imp case at 3500fps bullet weight 550grains and BC .900 now that would be something else. I might just need another action big enough to try one of these :D
     
  4. SBruce

    SBruce Well-Known Member

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    WOW!!!!..............its all I can say...............WOW!!!!:D
     
  5. cowboy

    cowboy Well-Known Member

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    That ought to be big enough even for the BIG BOYS.
     
  6. Fiftydriver

    Fiftydriver <strong>Official LRH Sponsor</strong>

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    If the 458 Allen Magnum works out and shows promise, there is always the next step, 458 Maximus!!!! I think that capacity will be to large but many told me the 510 AM would not offer anything over the BMG, that has been proven wrong so who knows!!!
     
  7. SBruce

    SBruce Well-Known Member

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    And here I thought the 50 BMG was the Big Bada$$ on the block. I think you've knocked him out and sent him home crying like a little girl.

    3100'/sec with a 750 grain slug?..............Wow!!........is all I can say. That is just unfrikenreal!!

    Now the 458 AM..............Holy cow and WOW!!

    Are you looking to get military accounts??
     
    Last edited: Jan 18, 2011
  8. ELR Researcher

    ELR Researcher Well-Known Member

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    Kirby:

    What is the name of the "510 Allen Magnum necked down to 458"?

    Drawing? Photos?

    Ed
     
  9. eagleclaw

    eagleclaw New Member

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    How will lengthening the body for the .510 Maximus effect feeding in repeaters?
     
  10. ROBSTER

    ROBSTER Well-Known Member

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    Why not take the Maximus case and open it up to say .600 or .700 for a single shot. With lathe turned bullets you should be able to get some pretty high B.C.s
    Oh and get a ATF exemption for a single shot non -destructive device.
    Robster
     
  11. nitrousmudbogger

    nitrousmudbogger Well-Known Member

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    That place out of south africa makes a 50 bullet that is 1200 grains and a bc of like 2 or some crazy thing. That in the 50 max would be real interesting. Some long range smack down power. Keep us posted on the results. What bullets are they using in the 460 styers?
     
  12. sp6x6

    sp6x6 Well-Known Member

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    The 460 Allen Assassin??gun)
     
  13. azsugarbear

    azsugarbear Well-Known Member

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    Stop the Madness!!!! Where will it all end????? :)

    No need for any new names. These rounds already have a name. It's called artillery.

    If we hear about any more of these Monster Wildcats, a bunch of us are headed north for an intervention.

    Seriously.......

    Go Kirby, Go!
     
  14. B23

    B23 Well-Known Member

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    Maybe Kirby needs a new toy to tinker with and if so I vote for a 375-416Barrett AM....