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.458 socom

Discussion in 'Rifle Country' started by OhioChief, Jun 20, 2011.

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  1. OhioChief

    OhioChief Member

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    Just finished my RRA .458. Oddly enough, the flash on the camera makes it look silver....it's not. Black as any other 'Black gun' I own. I think I'll end up building a different lower for it, but this was a good start. Anybody know how to modify the Mag's for those large rounds?
     

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  2. Z-Michigan

    Z-Michigan Member

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    Looks nice!

    I thought half the point of 458 SOCOM was that it worked in 100% unmodified standard AR-15 magazines, same follower and everything.
     
  3. OhioChief

    OhioChief Member

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    Nope. I'm pretty sure you need to trim off a little of the feed lips (lack of understanding of the proper terms). They load well, but the second round won't feed. I'll have to do some research. RRA should have it on their site, but I thought I'd ask while posting a pic.
     
  4. Z-Michigan

    Z-Michigan Member

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    I don't own one, but the company that set this standard says you can use unmodified magazines:

    http://www.teppojutsu.com/458.htm

    I would try another brand/model of magazine before you start modifying the feedlips.
     
  5. OhioChief

    OhioChief Member

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    SBR site says the same thing. I read a while back that you had to do something to the mag, and I know for sure that the 2 I've tried didn't work. But I agree, I will keep researching before making any modifications. Thanks
     
  6. MCMXI

    MCMXI Member

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    Me too. I've been trying to decide if I want to put a .458 SOCOM or .450 Bushmaster on a spare BM lower and the magazine issue had me leaning towards the .458. I'll have to follow this thread very closely.
     
  7. lobo9er

    lobo9er Member

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    450 uses unmodified mags too i am pretty sure.
     
  8. lobo9er

    lobo9er Member

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    Ammo pretty easy to get for this guy?
     
  9. OhioChief

    OhioChief Member

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    There's a .458 forum as it turns out. Those guys all claim no mods needed, but mostly went with Lancer L5 mags. So that's what I'll do.

    Ammo. Well of course it's not cheap, but I get it mailed from SBR. 20 rounds goes for $60.
     
  10. MCMXI

    MCMXI Member

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    Based on what I've read, the .450 BM uses a different follower in 5.56 magazines.
     
  11. Robert

    Robert Moderator Staff Member

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    Time to buy a press and start reloading.
     
  12. lobo9er

    lobo9er Member

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    I think your right
     
  13. Sam Cade

    Sam Cade Member

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    WHy do you have the rear sight so far forward...and backwards?
     
  14. spartand003

    spartand003 Member

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    20 rounds for 60 bucks. o_O

    Man, I wish I could afford that.
     
  15. OhioChief

    OhioChief Member

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    Sam, the far forward I can explain because that just seemed comfortable. Now, Backwards, well that just gave me a good laugh. Never even noticed it. Turns out it works just fine that way...egg on my face. I just changed it.
     
  16. Sam Cade

    Sam Cade Member

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    Kinda hard to get a proper sight picture with the aperture that far away aint it?
     
  17. OhioChief

    OhioChief Member

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    Well I'll move it back and try it. They are further back on my other guns, so you're probably right.
     
  18. Mako_44

    Mako_44 Member

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    Ohiochief,
    The distance from the eye to the aperture is the magic behind that type of sight. If you have another AR or have a friend that has one. get a tape measure and sight down the alternate rifle, have someone measure from your nose to the sight.

    Now set your RRA to the same distance.

    ~Mako
     
  19. jerkface11

    jerkface11 Member

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    It's a pity the brass is always backordered and that the parent case is even more rare.
     
  20. OhioChief

    OhioChief Member

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    I have a couple presses, just haven't purchased the dies yet. I've got so many projects going that I'm not sure that's making my 10 budget item just yet, but it will. I agree, everytime I look at brass, and even much of the desired ammo, it's back ordered. Thankfully it's not meant to be a "plinker".
     
  21. Mako_44

    Mako_44 Member

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    SBR has Brass in stock.

    300 rounds for $241.40 that includes the $14.60 for shipping. That's cheaper than buying it directly from Starline. SBR sells it in 100 round increments and Starline has a minimum of 250 rounds.

    http://www.sbrammunition.com/brass.html

    ~Mako
     
  22. OhioChief

    OhioChief Member

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    Great. I'll jump on that right now. Thanks!
     
  23. atomchaser

    atomchaser Member

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    You may have to modify the Mags if you are shooting some of the longer rounds. I had to remove some metal on my mags with my dremel to feed the 500 gr rounds.
     
  24. OhioChief

    OhioChief Member

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    That may well have been my issue atom, I did have some longer rounds. I should have tried going to different ammo before I assumed that they just needed modified. I'm going to try a different mag, and a couple different types of ammo. Thanks
     
  25. houlador

    houlador Member

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    I dont remember the site, but I saw a dremel tool was used to "round out" or cut half circle into the front of the mag so the round is fed directly forward without any interferance. I am looking into the RRA upper as well. Thanks, Troy
     
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