MK318 ammo

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    Merlin593

    Active Member
    Mar 29, 2013
    353
    Towson, MD
    Just picked up a couple hundred rounds of Federal 5.56 62 Gr MK318 MOD-0 SOST T556TNB1.
    Looks like its difficult to find and definitely expensive!
    I always like to have an assortment of ammo lying around though...:thumbsup:

    Does anyone have experience shooting this round? Your impressions on accuracy, penetration, etc. is appreciated.
    It is supposedly a better round than the M855 62 grain green tips.

    Thanks in advance for any other info you'd like to share about your experiences with this round.
    Best,
    Jim
     
    friendlyhippo

    friendlyhippo

    Banned
    BANNED!!!
    May 7, 2015
    592
    Glen Burnout
    It's actually very easy to find (not locally, necessarily, but fairly locatable on the internet), and not TERRIBLY expensive (although for 5.56, it's up there....the .308 I just bought was 5 schmoolies more per 20 though).

    In fairness, just about anything is better than m855. The mild steel cores are so horribly non-concentric it's laughable at best. It was cheaper to produce and yielded "sufficient" accuracy in testing, leading to its adoption by the Big Components. there was a reason any unit which could get away with it, used other designations (typically mk262).

    it seems fairly well-liked on other forums, although i have yet to try it out myself.
     
    Last edited:
    Pinecone

    Pinecone

    Ultimate Member
    MDS Supporter
    Feb 4, 2013
    28,175
    friendlyhippo said:
    In fairness, just about anything is better than m855. The mild steel cores are so horribly non-concentric it's laughable at best. It was cheaper to produce and yielded "sufficient" accuracy in testing, leading to its adoption by the Big Components. there was a reason any unit which could get away with it, used other designations (typically mk262).
    Click to expand...

    The big problem with M855 is that it is too stable. So on impact, it does not yaw, causing a very small hole to be drilled through the target. M193 and others, yaw on impact, causing tumbling and fragmentation.

    M855A1 and M262 work MUCH better in this regard. The M855A1 has better hard material penetration.
     
    friendlyhippo

    friendlyhippo

    Banned
    BANNED!!!
    May 7, 2015
    592
    Glen Burnout
    Dodahdude said:
    So what is he difference between CALIBER-GAUGE and CALIBER??? See below.

    SKU: 39161

    UPC: 029465065133

    MFR#: XM193AF90


    FED American Eagle 5.56x45mm NATO 55 Grain Full Metal Jacket On 10-Round Stripper Clips

    Bullet Style: FMJ

    Bullet Weight: 55 gr.

    Caliber-Gauge: .223 REM.

    Quantity per Box: 90

    Caliber: 5.56mm NATO


    http://palmettostatearmory.com/federal-5-56-55gr-fmj-bt-90rds-strclp.html
    Click to expand...

    Your post has nothing to do with mk318, but what the heck...

    In this case, it doesn't really mean anything. Technically the 5.56 is loaded to a slightly higher max pressure, and "shouldn't" be routinely fired in something chambered in .223, but by and large the two are essentially the same thing. as long as you're not using military surplus ammo, there normally won't be ill effects from firing commercial ammo like that labeled as "5.56mm" in a .223-chambered gun.

    obviously there are so many factors that apply it's impossible to say if rifle x will shoot ammo y safely.
     
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