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50 Beowulf SBR upper or 12" slug gun?

Discussion in 'NFA Firearms and Accessories' started by adcoch1, Jun 12, 2017.

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  1. adcoch1

    adcoch1 Member

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    I am about to move out of Washington and get to the free state of Montana, and this frees up the option of SBS which aren't legal in Washington. The debate i keep having with myself is weather or not to just build a 12" rifled slug gun, or a 50 Beowulf 12" upper for the sbr lower... Both would do the same job close in (bear defense and home protection), but would the Beowulf actually be any better at longer ranges than the slugs in a rifled barrel. Cost is roughly the same, the Beo is one less tax stamp... Decisions, decisions...
     
    Last edited: Jun 13, 2017
  2. Ryanxia

    Ryanxia Member

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    Do the Beowulf since you can have several different uppers/calibers for the same SBR lower, and then pick up one of these tax stamp free..
     

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  3. adcoch1

    adcoch1 Member

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    Wow, my thoughts exactly!
     
  4. pdsmith505

    pdsmith505 Member

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    Magazine capacity for 50 beo is what, 10?

    12" pump will be 3+1...

    Much easier to build a silencer for rifles too...
     
  5. Varminterror

    Varminterror Member

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    I have an 870 and a Stoeger SxS, largely for the sake of having them, but for my defensive use, I built a 458soc SBR (uppers in 5.56 and 6.8 too).
     
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  6. Ryanxia

    Ryanxia Member

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    I don't know if they make rifled barrels but the KSG is a pretty nice compact pump gun too.
     
  7. adcoch1

    adcoch1 Member

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    I looked at a KSG today, and they are rather compact
     
  8. Ryanxia

    Ryanxia Member

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    I doubt they'll do it but a bunch of us asked Browning to make their 10 gauge pump into the same configuration as the Mossberg 590 shockwave. :D
     
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  9. CraigC
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    CraigC Member

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    The .50 is going to be much more capable and versatile.
     
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  10. adcoch1

    adcoch1 Member

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    I
    I Believe this is the answer, thanks CraigC. Now the question is weather it should be Beowulf or 458 socom... Decisions, decisions...
     
  11. pjeski
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    pjeski Member

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    One of each. :D

    In my experience, .50 beo ammo is much cheaper than .458
     
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  12. adcoch1

    adcoch1 Member

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    Yes, one of each is the right answer! But which one first... I do think the ar upper will come first since I can use it now, but once i get moved I'll probably want the slug gun too. I may try out a Mossberg shockwave to see if the short barreled style works for me, and if so i may sbr that, who knows...
     
  13. MCMXI

    MCMXI Member

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    I got my .450 BM barrel back today. I had it cut down from 20" to 12" and threaded 5/8"-24. I'll post a photo once I have the upper put back together. Next up is subsonic load development with 300gr bullets, probably Hornady XTPs with Trailboss.

    I'm going to run at least one 9-round mag on full-auto just to see how well it works. It should be fine with subsonic ammunition, kind of like a Thompson.
     
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  14. adcoch1

    adcoch1 Member

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    Let us know all the details on the full auto run, sounds like a blast!
     
  15. MCMXI

    MCMXI Member

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    Will do. Too bad that a 9-round magazine is the highest capacity available. :D
     
  16. adcoch1

    adcoch1 Member

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    I wonder if one of the ar drums could be converted to work...
     
  17. MCMXI

    MCMXI Member

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    Hmmm... maybe a .450 BM follower in one of those mags would be worth a try, and if it works it would be a lot of fun. A friend is building a .50 Beowulf upper to run on a machine gun lower.
     
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  18. pjeski
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    pjeski Member

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    Never mind, I thought we were still talking about the op.


    I use regular AR mags with both my .458 upper and my .50 beo. Never had an issue. Steel mags, pro-mags, and mostly magpul pmags. The magpul 40 round mags hold 13 rounds. I get 10 .50 beo in a 30rd mag but I'm not sure that applies to the .458
     
  19. Elkins45

    Elkins45 Member

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    The logic and economics of this approach make a lot of sense to me.
     
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  20. Ryanxia

    Ryanxia Member

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    I'm thrifty so I can buy more guns :)

    Adcoch1 - some friends have settled on the .450 bushmaster setup since they can use .45 bullets to reload and not have to buy special ones. Don't know if you reload or will in the future but food for thought.
     
  21. Elkins45

    Elkins45 Member

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    I have decided on 458 SOCOM when I finally get around to buying a big bore upper for my SBR AR. My reason is that I have an approved Form 1 for a 45 caliber silencer, and the SOCOM is better suited to the heavyweight bullets for subsonic loads. I have an ancient 500 grain round nose mold that would make a real thumper of a subsonic hunting round.
     
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  22. W.R.Buchanan

    W.R.Buchanan Member

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    You do realize that these guns really kick hard,,, right? I have fired a full sized AR rifle in 50 Beo,,, once!

    Lighter weight is not going to be your friend on this one.

    just a thought.

    Randy
     
  23. adcoch1

    adcoch1 Member

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    I do reload, but not currently for anything in 45. Have the stuff but not the gun at the moment. I like the bushmaster idea, but really good heavy bullets arent as plentiful as the .458 offerings, and if I want to headspace off the case mouth I might as well go 50 Beowulf. I am probably gonna go with an sbr upper and a sbs eventually, but the upper doesn't require another tax stamp... And I'm not afraid of recoil at all, if I need a gun for a specific job and it requires a heavy recoil cartridge I just make sure the stock fits me well...
     
  24. CraigC
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    CraigC Member

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    There are plenty of heavyweight .45 bullets available. You just need to get away from the idea that you might need a 500gr bullet. I wouldn't even go that heavy for Cape buffalo.
     
  25. adcoch1

    adcoch1 Member

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    I know you're correct here CraigC, but I would like to try it once or twice to see if the performance subsonic would be acceptable. I didn't want to muddy the waters of the question between the SBR and shotgun with a lot of suppressor questions and opinions, maybe I'll start another thread about that. Realistically, i will probably build two loads that work for a big bore upper and be done with it, a 350grn bullet is plenty big enough. The versatility is more what the shotgun would be about anyway, but ALL of the discussion in this thread has been helpful to me.
     

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