Allen magnum

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by harfman99, Mar 24, 2008.

  1. harfman99

    harfman99 Well-Known Member

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    I hear a lot of talk of an Allen cartrige. I would like to get some info on it IE case demensions, parent case and what potential it has.gun)
     
  2. TMR

    TMR Well-Known Member

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    Email Kirby at kballen@3rivers.net, or do a search on the different Allen Mag's. There is alot of information on this site regarding them.
     

  3. geargrinder

    geargrinder Well-Known Member

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    Last edited: Mar 24, 2008
  4. ss7mm

    ss7mm Writers Guild

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    harfman99:

    I'll warn you now, up front, be careful what you read and who you talk to about the Allen Magnums.;) You will hear what they are, how good they work and what a quality guy Kirby is, and.......it'll cost you dearly because you'll end up wanting one.:)

    TMR has the same thing (7mm AM) that I do and they are fantastic loooong range hammers.:cool:
     
  5. MagnumManiac

    MagnumManiac Well-Known Member

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    Does anybody have a photo they can post of these rounds?
    Especially the .408 chey tac?I've got no idea what this is,over here in Down Under 'ville.
    MagnumManiac:D
    gun)
     
    Last edited: Mar 25, 2008
  6. JeffVN

    JeffVN Well-Known Member

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    try this thread (long, but has the information that you are looking for):

    http://www.longrangehunting.com/forums/f19/375-allen-mag-load-data-ready-pics-27717/

    [​IMG]

    Allen Mags (from left to right in the picture - info from thread by Kirby Allen)

    224 Allen Magnum
    270 WSM case .............. 107 gr ULD RBBT........3400fps

    257 Allen Xpress
    300 Dakota case ............ 142-156gr ULD RBBT..3300-3100fps

    6.5mm Allen Xpress
    300 Dakota case ............ 142-165gr ULD RBBT..3350-3100fps

    270 Allen Xpress
    300 Dakota case ............ 169.5gr ULD RBBT......3200fps

    257 Allen Magnum
    338 RUM case................ 156gr ULD RBBT........3300fps

    6.5mm Allen Magnum
    338 RUM case................ 165gr ULD RBBT .......3300fps

    270 Allen Magnum
    7mm Rum case................ 169.5gr ULD RBBT....3400fps

    277 Allen Magnum
    338 Lapua case................ 195gr ULD RBBT.......3200fps

    7mm Allen Magnum
    338 Lapua case................ 200gr ULD RBBT......3250fps

    338 Allen Magnum
    408 Chey Tac case ........... 300gr ULD or SMK ...3400-3500fps

    JeffVN
     
  7. Fiftydriver

    Fiftydriver <strong>Official LRH Sponsor</strong>

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    Allen Precision Shooting
    ALLEN MAGNUM, ALLEN XPRESS AND ALLEN TACTICAL WILDCATS
    2007

    Listed below are the current members of the Allen Precision family of wildcat chamberings. Included you will find the name of the wildcat chambering, parent case used for the wildcat, preferred bullet for each specific wildcat chambering and average performance from listed barrel lengths. Also listed is intended use and appropriate loading powders for each.


    Allen Magnum Wildcats
    .224 Allen Magnum
    270 WSM parent case, fireformed to sharper shoulder angle and less body taper
    80 gr. up to 100 gr. Ultra Low Drag(ULD) Rebated Boattail(RBBT), still in development at this time
    3450 to 3550 fps in 27” barrel
    Designed for long range coyote hunting with minimum pelt damage. Also intended for pronghorn hunting and lighter deer at moderate ranges(400 yards and less.
    Appropriate loading powders: H-870, H-US869, AA8700 and WC872

    257 Allen Magnum
    338 Rem Ultra Magnum parent case, necked down to 257, fireformed to min body taper and sharper shoulder angle.
    100 gr.(4100 fps)up to 156 gr. ULD RBBT(.820 bc) 3350 fps in 30” barrel length
    Design purpose for long range pronghorn and deer hunting. Out to 800 yards on heavy deer, 1000+ on pronghorns. Also makes a very effective long to extreme range coyote rifle but a bit hard on pelts
    Appropriate powders: H-870, H-US869, AA8700 and WC872

    6.5mm Allen Magnum
    338 Rem Ultra Magnum parent case, necked down to 6.5mm, fireformed to min body taper and sharper shoulder angle.
    168 gr ULD RBBT (still in development)
    142 gr. SMK or ULD RBBT at 3450 fps with 142 gr. in 27” barrel, 3550 fps in 30” barrel lengths.
    Same design purpose as 257 Allen Magnum but designed for those that prefer the larger selection of 6.5mm bullets.
    Appropriate powders: same as 257 Allen Magnum

    270 Allen Magnum
    300 Rem Ultra Magnum parent case, necked to 270 and fireformed to min body taper and sharper shoulder angle.
    130 gr.(3800 fps) up to 169.5 gr ULD RBBT(.740 bc) 3300 fps in 27” barrel length, 3400 fps in 30” barrel length
    Designed for game up to 500 lbs at long range, deer and pronghorn out to any range a shooter can place the bullet in the vital zone of his target. Appropriate powders: H-870, H-US869, AA8700 and WC872

    277 Allen Magnum
    338 Lapua Magnum parent case, necked down to 270 and fireformed to min body taper and shoulder angle.
    140 gr.(3750 fps) up to 195 gr ULD RBBT(.920 bc) 3250 to 3300 fps from 28 to 30” barrel lengths
    Designed for long range precision big game hunting. Usible on game up to and including elk and moose even out to 1000 yards.
    Appropriate powders: H-US869, H-870, AA8700 and WC872

    7mm Allen Magnum
    338 Lapua Magnum parent case, necked down to 7mm and fireformed to min body taper and shoulder angle.
    140 gr.(3800 fps) up to 200 gr. ULD RBBT(.900 bc) 3200 to 3350 fps from 26” to 30” barrel lengths
    Designed for long range big game hunting up to and including elk and moose. Has been used effectively on elk out to 1300 yards and has also proven one of the most ballsitically potent rounds in use today including the 277 Allen Magnum and the 338 Allen Magnum. Has proven capable of ½ moa accurate out to 1000 yards and 1 moa accurate out to 2800 yards in good conditions.
    Appropriate powders: H-Retumbo, H-50BMG, H-870, H-US869, AA8700 and WC872

    338 Allen Magnum
    408 Cheyenne Tactical parent case, necked down to 338, shoulder moved roughly 50 thou forward and fireformed to min body taper and sharper shoulder angle.
    265 gr. AT RBBT(.920 bc) at 3500 fps in 32” barrel up to 350 gr. ULD RBBT at 3200 fps in 32” barrel.
    Designed for heavy big game hunting at long range or standard big game hunting out to extreme range. Has been proven consistant and accurate out to 3008 yards by holding moa accurate out to this range and remaining super sonic in velocity with the 265 gr. AT RBBT.
    Appropriate powders: H-50BMG(recommended), H-870, AA8700, US869, WC872, VV 20N29

    375 Allen Magnum
    408 Cheyenne Tactical parent case, necked down to 375, shoulder moved forward 50 thou and fireformed to min body taper and sharper shoulder angle.
    300 gr.(3400 fps in 32” barrel, est.) to 350 gr. SMK at 3300 fps in 32” barrel(est.)
    Designed for heavy game hunting or any application where extreme ballistic performance is wanted with a very large kenetic energy payload on impact.
    Appropriate powders: H-Retumbo, RL-25, H-50BMG (est.) still in research and development stages at this point.

    510 Allen Magnum
    50 BMG parent case, fireformed to min body taper and sharper shoulder angle.
    750 gr. A-Max or ULD RBBT at 2900 fps in 34” barrel length
    Designed for heavy game hunting where legal and extreme range target shooting.
    Appropriate powders: H-50BMG, WC872, H-US869, VV 20N29


    Allen Xpress Wildcats
    257 Allen Xpress
    300 Dakota parent case, necked to 257 and fireformed to the Allen Magnum shoulder and body configuration.
    100 gr. (3750 fps in 28” barrel) to 156 gr. ULD RBBT at 3050 fps in 27” barrel and 3125 fps in 30” barrel lengths.
    Designed for conventional deer hunting out to 600-700 yards.
    Appropriate powders: Ramshot Magnum, H-US869, H-870, AA8700 , WC872

    6.5mm Allen Xpress
    300 Dakota parent case, necked to 6.5mm and fireformed to Allen Magnum shoulder and body configuration.
    100 gr. (3800 fps in 30” barrel) to 168 gr. ULD RBBT (still under development)
    Designed for same use as 257 Allen Xpress but for those that prefer the 6.5mm bore diameter.
    Appropriate powders: same as those for 257 Allen Xpress

    270 Allen Xpress
    300 Dakota parent case, necked to 270 and fireformed to Allen Magnum shoulder and body configuration.
    130 gr. (3500 fps in 30”) to 169.5 gr. ULD RBBT at 3200 fps in 30” barrel
    Designed for medium size big game out to ½ mile range.
    Appropriate powders: H-1000, Rl-25, Retumbo, Ramshot Magnum

    300 Allen Xpress
    338 Lapua Magnum parent case, necked to 30 cal and fireformed to the Allen Magnum shoulder and body configuration.
    180 gr. (3450 to 3550 fps in 27-30” barrel) to 265 gr. ULD RBBT(3000-3100 fps in 27-30” barrel)
    Designed for medium to heavy game at long range, deer, elk and moose specifically
    Appropriate powders: H-1000, Retumbo, Rl-25, US869

    338 Allen Xpress
    338 Lapua Magnum parent case, fireformed to Allen Magnum shoulder and body configuration.
    200 gr. (3350 to 3450 fps in 27-30” barrels) to 300 gr. SMK or ULD RBBT (2850 to 2950 fps in 27-30” barrels)
    Designed for heavy game out to long range.
    Appropriate powders: H4831, Rl-22, Rl-25, H-1000, Ramshot Magnum, Retumbo

    375 Allen Xpress
    338 Lapua Magnum parent case, necked up to 375 and fireformed to Allen Magnum shoulder and body configuration.
    260 gr. (3150 to 3250 fps in 27-30” barrels) 300 gr. (2900 to 3000 fps in 27-30” barrels)
    Designed for heavy and dangerous game.
    Appropriate powders: H-4350, H-4831, Rl-19, Rl-22


    Allen Tactical Wildcats
    458 Allen Tactical
    408 Cheyenne Tactical parent case, Necked to 458 and fireformed to Allen Magnum shoulder and body configuration.
    Bullets under development: 600 to 750 gr. ULD RBBT, estimated velocity 2550 to 2350 fps in 32” barrel.
    Designed for heavy tactical use or Dangerous game hunting.
    Appropriate powders: Still under research and development stanges

    50 Allen Tactical
    408 Cheyenne Tactical parent case, Necked up to 510 cal and fireformed to Allen Magnum shoulder and body configuration.
    750 gr. ULD RBBT or A-Max(2450 fps in 32” barrel)
    Designed for heavy tactical use for 50 BMG class performance but in much smaller and lighter tactical style rifles. Also usable for dangerous game hunting.
     
  8. MagnumManiac

    MagnumManiac Well-Known Member

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    Thanks JeffVN,
    Those pics are awesome!
    The only piece of info I couldn't find,I read ALL the threads you supplied,was what head size is this 408 chey tac case?
    Does it fit in anything other than 'custom' actions?
    Any more info would be GREATLY appreciated.I might build ONE or MORE!
    MagnumManiac :D
    gun)
     
  9. joecool

    joecool Well-Known Member

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  10. harfman99

    harfman99 Well-Known Member

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    Thanks for all the great info everone. They are pretty "wow" to say the least! I am in the middle of a project right now that will get me close to the 7. This info will let me see where I am standing against some of the best out there. Also how deep in the pocket book would a person have to dig to have Kirby build one in a remington action?
     
  11. WildcatB

    WildcatB Well-Known Member

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    Not too expensive

    If you consider their accuracy and performance, I think they are a bargain compared to other custom guns. I'm having one built with a new stiller action and it's still less than half of a Lazzeroni. In fact, it's less than than what Cabalas is selling one of Kirby's USED guns for. If I where you, I'd order one. One of these days, Kirby will have to give in to the law of supply and demand and raise his prices.
     
    Last edited: Mar 27, 2008
  12. Lightvarmint

    Lightvarmint Guest

    And when that happens, you can obtain a fired case and have a reamer and gages made from it. Then, have your gunsmith of choosing do the work for you.

    Nothing magical about chambering, threading and crowning a barrel. Additionally, stock work is easy to have done as well. Even by folks who have been doing it much longer than Kirby.

    So, don't get locked into or fall in love with one gunsmith. Keep them guessing.

    James
     
  13. Buffalobob

    Buffalobob Writers Guild

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    That is what is known as intellectual theft. While it is not unlawful, it is dishonest.

    Kirby goes to a lot of trouble and expense to test his cartridges and the rifles that will shoot them. There is a lot of hidden costs that most people don't see like testing different barrels and different brass but people like me and Dick have a reasonable understanding of it. When you steal his ideas and have someone else build a rifle you have failed to pay for Kirby's hidden costs and have cheated him.

    The chief reason I don't have Kirby build more of my rifles is I am just really paranoid about shipping my guns around. If a person does good work for you then you should show appreciation by customer loyalty.

    Finally, if there lots of gunsmiths who can build great long range rifles around why don't you see their names mentioned when hunting season rolls around and pictures are posted and proof is laid out for all to see.
     
  14. Slopeshunter

    Slopeshunter Well-Known Member

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    X2, agreed BB.