Home Defense 5.56mm Ammo: IMI’s Mk 262 Clone 77gr OTM gel test

    We shoot 5.56mm IMI 77gr OTM ammunition from an AR15.com AR15 with a 10.5″ 1:7″ twist barrel into Clearballistics ballistic gel to measure velocity, penetration, expansion/fragmentation, and retained weight.

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    Penetration: 16.2″
    Retained weight: 53.9gr
    max expansion: 0.539″
    Min expansion: 0.368″

    Velocities in fps:
    2,472
    2,405
    2,466
    2,470
    2,385
    Average: 2,439.60
    StdDev: 41.38
    Min: 2,385
    Max: 2,472
    Spread: 87

    Temp: 82 °F
    BP: 30.17 inHG
    Altitude: 1,800 feet

    ««« GUNS IN THIS VIDEO »»»
    AR15.com AR15 with a 10.5″ 1:7″ twist

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    Andrew

    Andrew is a combat veteran of OEF and has performed hundreds of ballistic tests for his YouTube channel, The Chopping Block (https://www.youtube.com/user/chopinbloc). He is an avid firearm collector and competitor and lives with his family in Arizona. If you have any questions, you may email him at [email protected]


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