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Black hills 75 grain HP 223/MK 262 MOD O

Discussion in 'Rifle Country' started by Tady45, Nov 9, 2005.

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  1. Tady45

    Tady45 Member

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    Well, ordered a bunch of Black Hills 75 grain 223 HP 's today...By the way, got them from North West Loading supply, in WA state. Ken, (the owner) is a very nice gentlemen to work with. Now, i bought these heavier rounds as a result of a article I read, about a FED unit in Iraq. The moral or the story is that these 75 grain HP's have stopping power that say a 52 grain would not...What do you guys say..? By the way...I THINK the military call these rounds MK 262 MOD 0...Are they the same rounds? Does a heavier 223 remove concerns about this round?
     
  2. Langenator

    Langenator Member

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    Most of the concerns come from rounds fired from the short barreled (14.5") M4. The 62 gr SS109 round was optimized for a 20" barrel.

    The 75 grainers are also optimized for the 20" barrel, especially at longer ranges. But they do pack more of a punch than the 62s
     
  3. nipprdog

    nipprdog Member

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    what is the twist rate of your rifle?
     
  4. MartinS

    MartinS Member

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    Try shooting some water jugs with a witness board behind. See what happens, maybe the longer bullet, with whatever twist rate you have, will yaw quicker.
     
  5. 355sigfan

    355sigfan member

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    Your only giving up range with the shorter barrel. Since most gun fights even in the military context happen close its not much of an issue. There is no point in my opinon for a 20 inch 5.56. This round is a cqb tool. Its not at its best at long range anyway. Why try to make it something its not. its great from 0 to 300 yards or so depending on the ammo. If you need to have stopping power at long range get a 308. Thats what battle rifles are for.
    Pat
     
  6. Don't Tread On Me

    Don't Tread On Me Member

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    The 75's basically give the 5.56 "5.45" yawing characteristics. That plus fragmentation and greater weight makes for a much more lethal package.
     
  7. Zak Smith

    Zak Smith Moderator Emeritus

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    Black Hills 75 or 77gr New Mfgr or Reman ("red" or "blue" box) is NOT Mk262 Mod whatever. The Mk262 ammunition is loaded 100-150fps hotter than the commercially available Black Hills ammunition.

    The Mk262 uses a 77gr bullet, either Sierra or Nosler.

    A 77gr bullet will stabilize just fine from a 1:8" twist or faster (eg. 1:7"). Reports indicate that some 1:9" twist barrels will shoot 75-77gr bullets out to 200 yards, but success is not guaranteed.

    The 75gr Hornady bullet has a shorter "neck region" in its wound profile than the 77gr Sierra, giving it slightly better terminal ballistics. They violenty fragment within the first 5", and continue to penetrate to 10-14". They will fragment at lower velocity than M855 or M193.

    The 75-77gr bullets will have superior terminal effects against unarmored targets compared to M193 or M855, at any range when fired from the same rifle.

    See http://www.ammo-oracle.com for more info.


    [​IMG]
     
  8. MTMilitiaman

    MTMilitiaman Member

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    I was going to bring up that the military version had a cannelure while the commercial version does not but the article Zak posted already brought that up.
     
  9. Tady45

    Tady45 Member

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    So then are the MK262's available, or are they only for LEO / Military use?
     
  10. Zak Smith

    Zak Smith Moderator Emeritus

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    Rejects are periodically available from different sources such as Fulton Armory or Cabellas. Hornady makes a 75gr TAP "NATO" sold only with LEO letterhead, which is the hot spec also.
     
  11. Don't Tread On Me

    Don't Tread On Me Member

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    Well, it is nice to get the extra FPS...and the cannelure is great too, but the black-box Hornady TAP is just fine. It is significantly better than regular military ball ammo. The rest is just splitting hairs. Get that and you've almost doubled the terminal performance of your rifle. No need to stress out looking for the NATO variety. Unless of course you'd like to brag about having some.
     
  12. Zak Smith

    Zak Smith Moderator Emeritus

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    +1

    Buy yourself some Black Hills Blue Box (reman) 75 or 77gr (or 68-69gr if you have 1:9") twist and shoot it until you can hit 10" targets to 400 yards from field positions, or silhouettes to 500-600. There's no point in having a small stash of "Super Ammo" if you can't shoot it regularly to maintain zero and train enough with it to know hold-overs.

    -z
     
  13. Don't Tread On Me

    Don't Tread On Me Member

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    Exactly!


    For cheap practice ammo that mimics my defense loads, I take LC or Winchester military brass, and load it with 68gr Hornandy BTHP, CCI 556 mil primers...


    If not, get that blue box. It's more lethal than 855 or 193 and its a "practice" ammo...lol
     
  14. artherd

    artherd member

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    +100
     
  15. ctchapman

    ctchapman Member

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    If you want terminal velocity out of a 223 try the 223 wssm, you will not be disappointed. For the rest, has anyone tried the Winchester silver tips, they are available in several weights and work very well out to 400 yard on white tail and smaller critters
     
  16. 444

    444 Member

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    Can anyone give me the muzzle velocity of the military Mk262 (or whatever it is called) ? The heavy 77 grain bullet muzzle velocity ?
     
  17. Alex45ACP

    Alex45ACP Member

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    Only problem is, the stuff is so expensive.

    Regular 5.56mm ball ammo is pricy enough, and hard to find at the moment :(
     
  18. ARperson

    ARperson Member

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    Bother. Just reload your own and get exactly what you want. :p
     
  19. Zak Smith

    Zak Smith Moderator Emeritus

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    Basically, it's 120-180fps faster than the Black Hills commercial 75-77gr.

    -z
     
  20. yesterdaysyouth

    yesterdaysyouth Member

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    2615fps
     
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