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Glenn

Just finished 6.5 CM, very hard to get shell out of chamber

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I'm new to this, this CM was going to be my first build but did a 223 to get my feet wet before diving in.
This was a DPMS build kit from Moriarti armaments, the upper was a completed one--didnt want to get into all that yet. The 22" SS fluted barrel is from ballistic advantage. Not sure about the BCG. The lower is an 80% which actually sparked the build,,i just had a feeling Pa. was going to jump on board with Va. ( they did, and hopefully that went away for a long time). Milling with the 5d tactical multi platform jig was fun !  Im hooked. 
I have two issue with this build.
#1 the bolt catch wont catch the bolt ( so i guess at this point its just a lever)  The pivot action of the lever doesn't have enough travel to go high enough to catch the bolt. I either have to mill out a little in the lower or take off a little of the lever's backside. OR there is another lever i dont know about out there. Im sure others have had this issue, hope someone can help out. 
Empty mag doesnt activate it either of course. 

#2   I placed A zooms in the mag to see how it cycles ammo. Pulled the charging handle and left go, went to pull it out and it was stuck. Had to put it on the floor an push down with both hands and came out. You can see in the photos there are markings on the bullet and shoulder of the cartridge. I figure that has something to do with it, none of my other firearms does anything like this. The scrapes in the bullet can easily be felt as is the one in the brass.  I ran a camera up in the chamber to see if there was a burr or any signs of why this would be doing this but didn't see anything. I oiled up the A zoom and bolt parts that would possibly be a problem. It got to where i could get it out with one hand but it was very tight.  Any help would be awesome 
 

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The reason I got the complete upper was to not have to do the headspace thing, the upper came with the bolt installed.  But I sure have thought did they check it or not?
The A zooms are metal. 

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39 minutes ago, Glenn said:

#1 the bolt catch wont catch the bolt

Sometimes rounding that bottom corner of the catch will let it come up higher. Here is a thread on bolt catch sizes from different makers;

Mark on the brass looks to be from the lugs around the ramp, I have used a jewelers file and a stone to smooth some out, mostly though I let it wear in. The marks on the bullet I am not familiar with. I have never been impressed with tolerances on snap caps, I just don't use them after seeing them stick in chambers that had no issue with factory ammo.

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Thanks, i was thinking of taking a little off that lever first to see what happens. 
I tried the snap caps first , the pictures was the real deal. I was really hoping the snap caps was the issue but not my luck 

The scrapes do look like from the lugs. Letting it wear in would be fine, i was just worried about how tight things were. 

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3 hours ago, Glenn said:

The scrapes do look like from the lugs. Letting it wear in would be fine, i was just worried about how tight things were. 

Better tight than loose! You can always polish the chamber some, can’t put it back if it’s loose. Chambers I have had that were really tight are the more accurate rifles I have built, it can be a pain getting going but tiny groups make you forget the aggravation.  :thumbup:

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Cycling the snap-caps and live ammo in a brand new action or gun isn't gonna tell us much, honestly.  You'll have to shoot it and see what happens.  See how if acts and reacts by sending some live ammo downrange.

If your headspace was excessively short, a no-go gauge wouldn't close, but neither would an A-Zoom or live round.  You've already proven that they both close, even though it might be a little tight.  It's not gonna blow up when you shoot it, that's for sure.  Run some ammo through it.  Lube it well, beforehand, but don't lube (at all) that chamber.

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8 hours ago, jtallen83 said:

Better tight than loose! You can always polish the chamber some, can’t put it back if it’s loose. Chambers I have had that were really tight are the more accurate rifles I have built, it can be a pain getting going but tiny groups make you forget the aggravation.  :thumbup:

Thanks,, accuracy is the only reason I wanted this one so I feel better about it now :-) Ill get the scope on it this week and run some ammo through it.  The post after yours is also making me want to get out with it :-)  

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8 hours ago, 98Z5V said:

 

If your headspace was excessively short, a no-go gauge wouldn't close, but neither would an A-Zoom or live round.  You've already proven that they both close, even though it might be a little tight.  It's not gonna blow up when you shoot it, that's for sure.  Run some ammo through it.  Lube it well, beforehand, but don't lube (at all) that chamber.

Very true on the headspace. I'll have to clean out some lube that I put on the snap cap earlier. Thanks 98z6v.  I think I'll be taking off work Friday and take this to the range. 🙂

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Just an update, I ran some rounds down range. The gun cycled fine. Brass actually landed within a foot an a half circle. Had some weird scapes on the brass as before. It is still unbelievably hard to get a round out with the charging handle.

Moriarti got back to and had a great talk. They  really think it's something  with the bolt.  They are sending me some parts. I put a round in the chamber by hand and it was fine, so very well could be. 

There sending me a different bolt catch lever also they think will work. 

I'll keep you posted 🙂

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