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Thread: Boom at the gun range.

  1. #11
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    I knew a guy that put a .308 though a .270 Win, well not quit all the way through it and looked like Al Jolson after pulling the trigger.
    Gettin' down innagrass.
    Let's Go Brandon!

  2. #12
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    Quote Originally Posted by titsonritz View Post
    Sounds like he is lucky to be alive.
    Not a squared away officer....
    Stick


    Board policy mandates I state that I shoot for BCM. I have also done work for 200 or so manufacturers within the firearm community. I am prior service, a full time LEO, firearm instructor, armorer, TL, martial arts instructor, and all around good guy.

    I also shoot and write for various publications. Let me know if you know cool secrets or have toys worthy of an article...


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  3. #13
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    I don't understand how this could happen. I can for sure visualize how a 5.56x45 cartridge could chamber in a 300BO chamber, but how can a 300BO cartridge chamber in a 5.56x45? The 300BO neck is so wide that it wouldn't enter the neck portion of the chamber. I'd think this would leave the bolt so far back that it would have no way to lock. What am I missing?

  4. #14
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    Quote Originally Posted by Bret View Post
    I don't understand how this could happen. I can for sure visualize how a 5.56x45 cartridge could chamber in a 300BO chamber, but how can a 300BO cartridge chamber in a 5.56x45? The 300BO neck is so wide that it wouldn't enter the neck portion of the chamber. I'd think this would leave the bolt so far back that it would have no way to lock. What am I missing?
    Certain bullets profiles in 300 will chamber in 556 but not all.

    Sent from my SM-G973U using Tapatalk

  5. #15
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    The bullet in 300BLK gets pushed back into the case and due to the 5.56 headspacing of the chamber it allows the firing pin to set it off.
    Last edited by zack991; 12-05-21 at 17:51.

  6. #16
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    Do you know if the same thing can happen with .300 HAM'R? I thought it could not but your illustration shows more room in front of the .300 BLK case than I thought would be there.

  7. #17
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    Quote Originally Posted by zack991 View Post
    Guy came in and he was shooting his custom built ARs, one 5.56 and the other 300blk. He fired 300blk out of his 5.56 rifle. Not sure who the manufacture of his upper or BCG, he couldn't remember. Barrel was from Bear creek. The young guy was fine, only had a three inch cut on his forarm. Why i never shoot 300blk at the same time I shoot my 5.56 guns. will add more photos when I get a chance.
    Happens much more than is publicly disclosed.
    2012 National Zumba Endurance Champion
    الدهون القاع الفتيات لك جعل العالم هزاز جولة الذهاب

  8. #18
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    Quote Originally Posted by Disciple View Post
    Do you know if the same thing can happen with .300 HAM'R? I thought it could not but your illustration shows more room in front of the .300 BLK case than I thought would be there.
    I honestly dont know, anything is possible. A gunsmith who works with that caliber would have a better idea.

  9. #19
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    OK, now I understand. I'd assumed that the cartridge lengths were the same, but they're not.

  10. #20
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    Here is .300 HAM'R. Does anyone think this could be forced into the chamber under normal cycling? One HAM'R in the middle of a 5.56 magazine in an overgassed gun?




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