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  1. #1
    shootbrownelk is offline Junior Member
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    May 2014
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    EAA semi auto info

    My friend just bought an EAA witness semi auto handgun. The bolt is stamped .38 SA (Super Auto?) but the 3 magazines he got with it are loaded with 10mm auto ammo. Are they interchangeable? He says the seller shot it a few times. As far as I know, he only got the slide and barrel that's on it. What say you guys? I don't want him to hurt himself.Thanks for any info you provide.

  2. #2
    Steve M1911A1's Avatar
    Steve M1911A1 is offline Senior Member
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    The .38 Super is different in diameter from .40 and 10mm.
    However, the case heads may be "close enough for folk music."

    .38 Super: bullet diam. = 0.358"; case-rim diam. = 0.405"
    10mm: bullet diam. = 0.400"; case-rim diam. = 0.424"

  3. #3
    desertman is online now Member
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    Aug 2013
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    I doubt that he shot it with 10mm ammo as it would not chamber. The magazines might be able to accommodate both rounds though. I have CZ's in both 9mm and .40 and some of the magazines can be used for both calibers. I don't have a 10mm to compare it with but I do have a .38 Super and that round is indeed longer than the 9mm. I'm guessing that the .38 Super would be comparable in length to 10mm. Many guns that are chambered for the 9mm are also chambered for the .40 and basically use the same magazines the width of the feed lips and capacity are what is different.

  4. #4
    zeke4351 is offline Junior Member
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    Did he buy it as a 10mm or .38 Super. I would guess it is a .38 Super and they were using the 10mm mags. The barrel should be stamped for the correct caliber. I think that is what you are calling the bolt.

  5. #5
    shootbrownelk is offline Junior Member
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    May 2014
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    Thanks guys, I'll double check that stamping. I sure wouldn't shoot it, or try to until I had it figured out. It's on the right side of the barrel.

  6. #6
    shootbrownelk is offline Junior Member
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    Mystery solved. I called my friend and as luck would have it...the seller was there. He looked at the .38SA stamp and said....OH S#@T...I gave you the wrong pistol! Seems the guy has 2 identical Witness' one is a .38Super and the other is a 10mm. He's switching guns for him! Thanks guys.

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