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5.56 mm Reloads Won't Chamber?

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  #1  
Unread 04-22-2012, 12:57 AM
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Join Date: Feb 2012
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5.56 mm Reloads Won't Chamber?

I have two AR-15s one of which is new. The new gun will not chamber my reloads but will fire military rounds perfect. My old AR will chamber both with no problem at all. Both are 5.56 mm NATO chambers. What might be going on? Thanks for any ideas. PK
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  •   #2  
    Unread 04-22-2012, 02:25 AM
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    Re: 5.56 mm Reloads Won't Chamber?

    The chambers are different
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      #3  
    Unread 04-22-2012, 05:10 AM
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    Re: 5.56 mm Reloads Won't Chamber?

    could be the chambers a bit tighter. I size all my 223 and 308 ammo thats going in black guns with a small base sizer. It doesnt effect brass life or accuracy and it goes a long way toward insuring reliablility. Even guns that will run with brass sized in a regular die can start misfeeding when they get a bunch or rounds through them and everything gets dirty. All my ar ammo is sb sized and trimmed after every shooting.
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      #4  
    Unread 04-22-2012, 08:29 AM
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    Re: 5.56 mm Reloads Won't Chamber?

    How many times has the brass been fired? I ran into the same issue when I first starting to learn about relaoding, and I have not had an issue since as long as hte brass is sized and trimmed prior to loading.

    I have an older 5.56 PWA Upper that will eat anything. I have another one that the tolerances are much tighter.....
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      #5  
    Unread 04-22-2012, 08:53 PM
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    Re: 5.56 mm Reloads Won't Chamber?

    How are you re-sizing it. Any sizing FL die if properly set up will re-size to Sami Spec. Sounds like your die may not be set correctly.
    Also check your OAL on your casing, but it has to be quite a bit longer then spec to start causing jams..
    Never had a problem with at least 10 diff. AR15 rifles using RCBS and Redding FL dies and checking my brass OAL.
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      #6  
    Unread 04-23-2012, 03:21 AM
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    Re: 5.56 mm Reloads Won't Chamber?

    i have had problems using lee dies and rcbs but I believe redding normal 223 die is cut to close to small base dimentions.
    Quote:
    Originally Posted by reelamin View Post
    How are you re-sizing it. Any sizing FL die if properly set up will re-size to Sami Spec. Sounds like your die may not be set correctly.
    Also check your OAL on your casing, but it has to be quite a bit longer then spec to start causing jams..
    Never had a problem with at least 10 diff. AR15 rifles using RCBS and Redding FL dies and checking my brass OAL.
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      #7  
    Unread 04-23-2012, 04:03 AM
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    Re: 5.56 mm Reloads Won't Chamber?

    Three words " Redding body die "
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