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Thread: .50-110 Romanian FPK

  1. #11
    Gunco Member ambivolent's Avatar
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    Now that's what I call a caliber conversion

  2. #12
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    Sssooo... my .50 Beowulf plans have fetched up against the price of .501" barrels. Perhaps it seems silly in view of the overall cost of the project, but it chaps me to find prices for .501" barrels close to $300 for a blank, and .510-.513" barrels as low as $75.

    Doing some more research, I found the .50-110 has the same case head size as the .45-70, .040 more than the 54R. Overall length is 2.75, vs 3.038" for the 7.62x54R. Bullet diameter is .512, so an inexpensive barrel could be used.

    When I saw the .50-110 posts I thought the guy was nuts, but it looks like it would be no more difficult than .45-70. .50-110 chamber reamers can be rented without trouble, and though the brass isn't as cheap as Beowulf, but at $1.18 each qty 100, the price isn't too bad.

    A .50-110 would be *much* simpler and cheaper than a .50 Beowulf.

  3. #13
    No Hope For Me 1biggun's Avatar
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    .50-110 is going to require a threaded barrel not a pinned barrel. the pin would likely hit the chamber. look at the 500 S&W thread that guy threaded a normal trunion and did a really nice job. a virgin yugo trunion would be ideal as well since it has a barrrel bore that is not interupted.

    A .50-110 would be *much* simpler and cheaper than a .50 Beowulf.
    How do you figure it to be simpler? is it the obtaining a reamer that makes you think that?? making a .50-110 mag fit into any AK based build is going to be way more dificult than getting a 50 beowulf mag to work. the beowulf mag is just a sligtly moded 223 mag. and if you were to use a AR to AK adapter it would be no work. then the 50 beowulf uses a standard 7.62x39 bolt instead of what ever a .50-110 will need nad that will alos regure a differant carrier as well. then there is the whole recivers being longer issues ect. A 50 beowulf can be built on a threaded milled reciver or threaded reweld with basicaly a barrel swap and the required oversized barrel attachments. there is no way a .50-110 build would be *much* simpler IMOO

    as far as cost have you priced .50-110 brass or ammo? not to mention the cost of the additional powder. the brass alone is over a $1.10 each.

    50-110 Winchester

    beowulf brass is 57 cents. or about half of a .50-110
    Alexander Arms .50 Beowulf Brass Packs

    the bolt ,carrier, reciver, trunions ect will all be much more expensive than a 50 Beowulf not to mention the cost of shooting it will be at least 100% more.

    If you want to build a .50 with a big bolt face Id consider a 500 S&W. the brass is around 25 cents each and dies and reamers are avaliable it will fit into a AK length mag and will likley perform as well as the beowulf when loaded up to simular pressures. it is avaiable loaded lot of places as well un like the .50 beowulf that Axalender Arms so tightly controls. a 410 sagia bolt would be a viable canidate for such a build.

    Now here is my idea for a really easy big bore. just use a .410 SAGIA as is but with a rifled barrel. use brass 2.5" shells or possably those steel wolf cases and load it with protuding slugs/bullets into a 3" sagia Mag and you would have a pretty wicked big bore for the price of a barrel and could be left with a shot gun designation and would still shoot 3" normal shoot gun shells.

    kind of a Mini 410 SGFH. hell in some states you could even hunt with it in a shot gun zone. not mine they dont allow 410,s on dear in wisconsin.

  4. #14
    No Hope For Me 1biggun's Avatar
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    Sssooo... my .50 Beowulf plans have fetched up against the price of .501" barrels. Perhaps it seems silly in view of the overall cost of the project, but it chaps me to find prices for .501" barrels close to $300 for a blank, and .510-.513" barrels as low as $75.



    These are way under $300
    here are 15" blanks pretty cheap under $100 add a much recomended muzzel break to make it 16"

    http://www.gmriflebarrel.com/catalog.aspx?catid=410stainlesssteel,1.1"round,15" long

    SS 500 SW Cartridge pistol blank

  5. #15
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    7.62x54R: 3.04 inches long
    .50-110 Winchester: 2.75 inches long

    A .50-110 would probably single-stack in a PSL mag.

    .50-110 rim diameter: .607"
    7.62x54R rim diameter: .567"
    .45-70 rim diameter: .608"

    It looks like a .45-70 rim will feed through a Yugo/PSL trunnion (I have one of each sitting right here), but since the Yugo trunnion won't feed a .50 Beowulf without some grinding on the lower left lug (which isn't used on a 2-lug bolt anyway) I assume a .50-110 would require similar clearancing.

    The bolt face might wind up as three lugs around the rim by the time you got done opening it up, but that wouldn't be a problem - Enfield .303s use a flat-faced bolt with just an extractor hook.

    7.62x54R pressure: 57,000 PSI (CIP piezo)
    .50-110 Winchester: 28,000 ESTIMATED
    (accuratepowder.com had an arbitrarily-set pressure limit of 28,000 PSI for their .50-110 and .50-140 Sharps loads, which was the closest thing I could find to the .50-110 Winchester)

    7.62x54R base diameter: .487"
    .50-100 base diameter: .551"

    54R head area: .186 sq.in.
    '110 head area: .238 sq.in.

    54R thrust: .186x57,000= 10,602 pounds
    '110 thrust: .238x28,000=6,664 pounds


    I was going to call Spencer Rifle Company and ask them what they did to run .50-110 through a PSL, but it looks pretty straightforward.

    In fact, since the .50-110 is a hair shorter than a .308, an enterprising builder should be able to build one on a standard AKM receiver and modify a .308 magazine.

  6. #16
    No Hope For Me 1biggun's Avatar
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    It looks like a .45-70 rim will feed through a Yugo/PSL trunnion (I have one of each sitting right here), but since the Yugo trunnion won't feed a .50 Beowulf without some grinding on the lower left lug (which isn't used on a 2-lug bolt anyway) I assume a .50-110 would require similar clearancing.
    45-70 will regure some considerble grinding to get it clear. you can gain clearance by trimming the left lug but then you going to have to get it to feed to the left as well.

    a Saiga 410 SG bolt or a entire doner gun. might be a better start.

  7. #17
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    No, just a little bit of grinding. When the nose enters the barrel the ramps on the rear of the locking lugs will raise the back up to feed the cartridge in closer to the barrel centerline. If you have a .45-70 cartridge and spare trunnion at hand, take a look at the angle the cartridge will feed from.

    If it had to come up straight from the bottom like an x39 it would be a different story.

  8. #18
    No Hope For Me 1biggun's Avatar
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    Pretty tight. I have a yugo trunion stiing here and almost ever calibur of ammo you can think of sitting here at all times LOL

  9. #19
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    Da, I used to laugh at the "cartridge collector" types. Now I'm glad for the little box of odd cartridges that somehow accumulated over the years. They've been quite handy lately.

  10. #20
    Gunco Rookie Spartiate's Avatar
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    My cartridge-diagram website of choice doesn't list the .50-110, but it lists the .45-110 with a case length of 2 7/8. Unless the .50 uses a much fatter case I'd guess 2.75" is the length of the brass, not the COAL.

    Take care,
    Mike

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