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    Really Senior Member RCS's Avatar
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    Cartridge development

    My photos show the early Winchester 224E2 cartridge designed for the Winchester Lightweight Rifle and the 222 Remington Special which later became the 223/5,56mm.

    The Winchester cartridge could be fired in the AR-15 but the 222 Remington Special could not be fired in the Winchester. There are other variations of these early test cartridges too

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    Contributing Member rcathey's Avatar
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    I always thought the Winchester Lightweight Rifle was a nifty looking thing. It would be neat to mock up a Mini-14 to look like one. I think one could get that to look pretty close.

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    Contributing Member CINDERS's Avatar
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    Nice ones

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    Really Senior Member RCS's Avatar
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    Thread Starter

    4,85x49mm in the Colt Model 01 AR-15

    On page 305 of the book "The Black rifle" there is a photo of a Co lt Model 01 AR-15 rifle that was re-barreled at Enfield Arsenal to 4,85x49mm for testing.

    my question, the 4,85mm is longer than the 5,56mm - was a different bullet used or was the rifle also modified ?

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    Really Senior Member Bruce_in_Oz's Avatar
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    The 4.85 round is somewhat longer than the 5.56, as can be clearly seen in the photo in RCS' post.

    The photo on page 305 of "The Black Rifle" shows a basic M-16 but with "4.85" painted on the hand-guard.

    It had to be "single shot" because there is no way the 4.85 round would fit in the standard magazine, or a suitable magazine would fit in a standard M-16 lower.

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    Really Senior Member jonnyc's Avatar
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    "re-barreled"

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    Really Senior Member RCS's Avatar
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    "re-barreled" is stated in the book.


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