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Thread: Another "now I've seen it all" posts

  1. #1
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    Another "now I've seen it all" posts

    I bought my first M1 Carbine when I was 16, uh... that's about 63 years ago. Time flies, but that is not what this is about. I recently picked up a few Carbine parts that included two unserviceable barrels. One barrel was a total rust bucket, but the other didn't look too bad. In fact it looked like it may have been a Winchester based on the flaming bomb stamped on the side of the gas cylinder. There was a grease pencil marking on the bottom that said excessive head space so I figured it was toast too. It does have a nice shiny bore, but wait... it only has two grooves! In all my years I've never seen a two groove Carbine barrel. I have seen a few Garand two groove barrels made from 03-A3 barrels, but never a two groove Carbine barrel. I can't see any lines where a A3 barrel may have been slipped into a bored out Winchester barrel either. Any one run into something like this before?
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  3. #2
    Platoon Sgt Pat C.'s Avatar
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    Re: Another "now I've seen it all" posts

    Ted, Is it the forged type with integral gas block or the later swaged type? Have any pictures?

  4. #3
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    Re: Another "now I've seen it all" posts

    It has the forged, Winchester style, machined gas cylinder. No manufacturers marking. I'll post a picture soon.
    www.tedbrownrifles.com

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  6. #4
    Administrator Tarheel Trooper's Avatar
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    Re: Another "now I've seen it all" posts

    Please do.


    I don't think I've ever seen or even heard of a 2 groove carbine barrel.
    On my honor,
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    or the public trust.
    I will always have
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    and others accountable for our actions.
    I will always uphold the constitution,
    my community, and the agency I serve.


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  7. #5
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    Re: Another "now I've seen it all" posts

    I had a 6 groove M1 Garand barrel once. Bill Ricca had told me of a smith who used to buy demill parts by the pound and make??? whatever he could. I wish I had saved the man's name.
    For Garands, he would use the chamber end of the M1, the barrel from ???? almost anything. He would create a "half-lap" joint and marry the 2 parts together.
    Then mill to the proper profile. The workmanship was excellent. IIRC he was in either PA or NJ.
    I was doing a cheap M1D for the heck of it using one of the Numrich barrel blocks ($12.99 at the time). Had a machinist turn down the chamber end and press fit the block on. I won't go into detail about how crappy those blocks are, but bottom line I removed the barrel gave it to a buddy who installed on another rifle and shot it with iron sights. Barrel was actually very accurate.
    Perhaps the guy Bill had told me about did that carbine barrel?? Any evidence of an extremely fine "blonde hair" line running around that barrel near and forward of the chamber?


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  8. #6
    Command Sgt Major VanHahner's Avatar
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    Re: Another "now I've seen it all" posts

    Two groove barrels are all WW2 productions. M17 two groove barrels were replacements made in 1940s.

    The Government facility at Springfield Armory and privately owned Winchester were producing rifles in record numbers, yet they could not produce them fast enough.

    The big bottleneck in rifle production was manufacturing the barrel and of this process cutting the four groove rifling was the largest time consuming element. Running at full speed, the rifling operation alone required between 10 and 15 minutes per barrel. On existing equipment, there wasn’t any way to speed things up.

    In the spring of 1942, one idea that surfaced was to eliminate cutting two of the grooves in the barrel. If this could produce an acceptable barrel, the time to cut the rifling would be reduced to almost half.




    ......
    Last edited by VanHahner; 6th August 2022 at 01:12 PM.
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  10. #7
    Administrator Tarheel Trooper's Avatar
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    Re: Another "now I've seen it all" posts

    Thanks Van…

    You sir, are a gentleman and a scholar!
    On my honor,
    I will never betray my badge,
    my integrity, my character,
    or the public trust.
    I will always have
    the courage to hold myself
    and others accountable for our actions.
    I will always uphold the constitution,
    my community, and the agency I serve.


    Member M14 Rifle Club Board of Directors


    NRA Basic Pistol Instructor
    NC C.C.H. Instructor

    "The Artist Formally Known As Shadow"

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