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Thread: .458 SOCOM

  1. #1
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    .458 SOCOM

    Can someone explain the .458 SOCOM cartridge to me? I am not interested in using it, I am just interested/curious about it in general. What is it good for, if anything? What about performance/ballistics? I guess anything and everything there is to say about it, good or bad, I am interested in hearing.

    I searched and couldn't really come up with anything anywhere else here on M4C.

    -WTDeBerry-

  2. #2
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    If you searched and didn't find anything, you likely didn't search very hard.

    Lots 'o info on the interwebs.

    You can start here: http://en.wikipedia.org/wiki/.458_SOCOM

    Then read here: http://www.teppojutsu.com/458.htm

    Then read here: http://458socomforums.com/

    Then head over to beyond556.com and read there

    Hope that might give you a bit more info on what you were looking for!

  3. #3
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    Oh, I did search the net and got a lot of information, I didn't find anything when searching these forums is what I meant.

    What I was looking for here were first-person accounts from people who have used it - do they love it/hate it, like it/dislike it? Why do they? Not very many threads about it. Sorry for misunderstanding.

    -WTDeBerry-

    ps - Thanks for the links. I will definitely check those out, as well.
    Last edited by WTDeBerry; 04-08-11 at 15:24.

  4. #4
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    Check out the Big Bore section of this forum. A few guys over there have had quite extensive dealings with the SOCOM/Beowulf...

    http://www.beyond556.com/bboard/foru...11-Big-Bore-AR

  5. #5
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    You seem as interested in it as I am..

  6. #6
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    Yeah, I am definitely interested. I am most certainly planning on owning one of these rifles someday.

    I'll try to call RRA on monday and see what they say...

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    I've had one for going on 6 years or so now. It is an interesting round and it fun to play with. I've never had great experience with its feeding correctly with factory ammo or even reloads. You get a huge bullet which is best for its heavy weight - think .45-70 (lower power loads) in an AR package. I've got handloads from 300 grains up to factory loads of 600 grains. It is a lot of fun to hand to someone who is new to ARs after having shot a bunch of 5.56 because the recoil is much heavier than a 5.56.

  8. #8
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    I know the SOCOM that I ordered for a buddy from RRA came with 2 spare buffer springs.

    It said to improve feeding/reliability. I didn't get much of a chance to play with it, as he came to get his new toy, but would that be part of your issues?

    What flavor do you have? RRA? Teppo?

  9. #9
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    I have a custom 458 SOCOM I built with a Teppo Jutsu barrel. I had the barrel sitting here for a while and finally got around to putting it together last November, right before I broke my ankle.

    I have taken it out twice to shoot it. It is great fun. I was using handloaded 405 gr Rem SP (big truncated cone flat point type bullet).

    I had no problems feeding reliably UNLESS one pulled back on the charging handle and let go. Then it would get hung up. But if you had a locked back bolt and hit the bolt release, it worked every time.

    I was using a PMAG -- I think it was a Rev M one.
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  10. #10
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    I wasnt aware that the SOCOM worked with the P mags. Got a picture of the build?

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    Here is a picture of yours truly at our recent M4C get together with it. I don't have any standalone pics. The 308 phantom on the end has been bored out for 45 caliber slugs and is being used more for looks and as a thread protector until I can afford a suppressor than any practical purpose.

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  12. #12
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    Quote Originally Posted by chadbag View Post
    I was using a PMAG -- I think it was a Rev M one.
    Looking at the pic I just posted, it does not look like a Rev M one. I had an assortment of Rev M and pre Rev M out that day and I guess I grabbed a non Rev M one when we played with the 458.
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    That looks awesome, Chad!

    I like the look of that SS tube. I think with a light bead-blast, it would look really great contrasted against a vortex or the like...

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    I have had excellent luck with the 458 both in regards to function and terminal performance.

    Key seems to be use the Barnes 300gr TTSX (designed specifically for the cartridge) and Lancer L5 mags.

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    Sorry to revive an older thread, but was looking to buy into a big-bore AR, and had a couple of questions about the .458 vs .50 Beowulf.

    1.) Does either have any major drawbacks, referring to capacity, feeding/cycling, magazine compatability?

    2.) Since inception, how cheap/plentiful are ammo options if I don't reload?

    3.) Would it be best to plan on handloading ammo for either or both, or is there plenty of ammo available in the market today?

    4.) Is the .50 Beowulf as "adaptable" as the .458 in terms of bullet types? I've seen the picture of the multiple bullet types/weights for the .458, does this exist in the .50?

    Thanks for any helpful advice, just looking for first-hand experience with the rounds.

    ~Bobby
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    The 458 has proven to be a lot more reliable and versatile than the 500 for us. For big hogs the 458 loaded with 300gr Barnes TSX just plain gets the job done in dramatic fashon!!!!

    I strictly handload so don't know what factory ammo availability is.

  17. #17
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    Quote Originally Posted by BWilson View Post
    The 458 has proven to be a lot more reliable and versatile than the 500 for us. For big hogs the 458 loaded with 300gr Barnes TSX just plain gets the job done in dramatic fashon!!!!

    I strictly handload so don't know what factory ammo availability is.
    I've been debating between the 2. I know the thread is a little old but if you still can see it can you tell me a little bit more about what you stated? Is the 300 gr. Barnes a better fit performance wise vs. lets say a bigger 458 bullet? I hear they go up to 600 grains for the socom. Or do you view the 300 the perfect combination of speed and power? I'm just curious as I'm looking to this right now.

  18. #18
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    ^^^ I'd like to hear your answer for this too.

    Also, how are Teppo rifles/barrels? Better than RRA? I'd like to Jump into .458 but I'm a little iffy about rra and all I know about Teppo is they make .458s.
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  19. #19
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    Marty, the owner of teppo, has moved out of country for his work. So basically Teppo barrels are going to be a no go. I believe he licensed SBR to make them and I'm not sure if there are others. I know he said that he'd see about after SHOT, whatever that would mean or entail. Hopefully, it means more manufacturers' and more distribution.

  20. #20
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    Have you considered 450 Bushmaster? I have one and I'm very impressed. Ammo can be had for not much more than a buck a shot and if you handload you should be able to use cheap 230 grain round nose 45 pistol bullets.

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