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Manners MCS-DBM Mini Chassis problem

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  #1  
Unread 03-05-2014, 10:57 PM
Bronze Member
 
Join Date: Aug 2013
Posts: 38
Manners MCS-DBM Mini Chassis problem

Hi all,
I just received my new build, with an MCS-DBM Mini Chassis (in a T4A stock) and am having a problem....

The LAST round from the magazine will jamb when closing the bolt SLOW.
The first four or three or two chamber fine. even slowly.

95% of the time, the last round will chamber fine when closing bolt fast on last round.

I have never seen this before. (but, I am no expert either) on 4 other guns I have had with a magazine.

I tested, by:
1) loading 5 rounds (in various order) at least 5 times. same result
2) loading one, of 5 rounds singly in magazine, same result - 50 total cycles.

I changed order to make sure it wasn't specific cartridges causing the issue.

The test cartridges measure same as Federal Gold match in my Hornaday OAL gauge.

Every time, the first 1-4 chamber fine. slow or fast.

anyway, I have contacted the gunsmith who built it, he is looking into it but unsure,
so I thought I'd check on your experience with this chassis/magazine for similar issues.

Last thought - it's only had 10 rounds through it, plus these test cycles... maybe it needs some "wear" ?

appreciate any ideas/info/experience !

This is a .308
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  •   #2  
    Unread 03-06-2014, 12:08 AM
    Silver Member
     
    Join Date: Feb 2010
    Location: Pocatello Idaho
    Posts: 499
    Re: Manners MCS-DBM Mini Chassis problem

    Question... is it an accurte mag center feed or a true double stack like an AW 10 round? and what are specs on this build such as action ETC? just to get a better idea
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      #3  
    Unread 03-06-2014, 09:26 AM
    Bronze Member
     
    Join Date: Aug 2013
    Posts: 38
    Re: Manners MCS-DBM Mini Chassis problem

    Quote:
    Originally Posted by Elk Hunter 338 View Post
    Question... is it an accurate mag center feed or a true double stack like an AW 10 round? and what are specs on this build such as action ETC? just to get a better idea

    It is a Rem 700 short bolt action. Stock bolt. trued/timed, etc.


    The magazine is Accuracy International 5 round style,
    as can be seen here: "Manners MCS-DBM mini chassis"
    MCS BDL and DBM Mini Chassis Manners Composite Stocks
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      #4  
    Unread 03-07-2014, 10:31 AM
    Silver Member
     
    Join Date: Feb 2010
    Location: Pocatello Idaho
    Posts: 499
    Re: Manners MCS-DBM Mini Chassis problem

    so i take it the rounds are feeding out of the center? is the last round getting jammed into the back of the barrel tenon? or??
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