Has Anyone Experienced This Before...

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JarHeadTim
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Has Anyone Experienced This Before...

Post by JarHeadTim » Sat Jan 28, 2017 1:58 pm

Hi...

Bought a 16 Factory NIB upper in 300 Blk. The recurring case mouth deformation is obviously consistent. The Left group of cases that were fired for load development and the right group was factory ammo and a different case...

Image

Anyone KNOW the cause of this...?

S/F

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bangbangping
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Re: Has Anyone Experienced This Before...

Post by bangbangping » Sat Jan 28, 2017 2:04 pm

I've been here for years and nobody has ever mentioned anything like that. :lol:

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steven11b
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Re: Has Anyone Experienced This Before...

Post by steven11b » Sat Jan 28, 2017 2:04 pm

I havent ever seen anything like that.
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smustian
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Re: Has Anyone Experienced This Before...

Post by smustian » Sat Jan 28, 2017 2:08 pm

SEARCH "dented case mouth" and have fun reading for days.

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bangbangping
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Re: Has Anyone Experienced This Before...

Post by bangbangping » Sat Jan 28, 2017 3:13 pm

Some options we may want to think about:

Image

:lol:

Guest762
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Re: Has Anyone Experienced This Before...

Post by Guest762 » Sat Jan 28, 2017 3:18 pm

bangbangping wrote:Some options we may want to think about:
Image
:lol:
Now now he's only been a member for 5 years you can't expect him to know everything :lol:
And with a name that starts with jarhead he may have been in a foxhole for the last 4.

sirgknight
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Re: Has Anyone Experienced This Before...

Post by sirgknight » Sat Jan 28, 2017 7:05 pm

who is the manufacturer of the upper? I would probably start by contacting them with the problem and ask for their input.

TRshootem
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Re: Has Anyone Experienced This Before...

Post by TRshootem » Sat Jan 28, 2017 7:37 pm

This case mouth denting is common on 300 BLK AR's. It really is no big deal, as they are usually not hurt enough to be resized.

I use a cut down piece of stick on bike tire patch and attach to the face of the brass deflector, where the brass is leaving a mark. It only takes a small piece to attached there to ease your worried mind.

Mine were blue in color, a black marker made it all but disappear, it worked just fine.

TR

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smustian
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Re: Has Anyone Experienced This Before...

Post by smustian » Sat Jan 28, 2017 7:41 pm

TRshootem wrote:This case mouth denting is common on 300 BLK AR's. It really is no big deal, as they are usually not hurt enough to be resized.

I use a cut down piece of stick on bike tire patch and attach to the face of the brass deflector, where the brass is leaving a mark. It only takes a small piece to attached there to ease your worried mind.

Mine were blue in color, a black marker made it all but disappear, it worked just fine.

TR
Sticky backed Velcro works better and no need for a Sharpie. :P

JarHeadTim
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Re: Has Anyone Experienced This Before...

Post by JarHeadTim » Sat Jan 28, 2017 8:44 pm

TRshootem wrote:This case mouth denting is common on 300 BLK AR's. It really is no big deal, as they are usually not hurt enough to be resized.

I use a cut down piece of stick on bike tire patch and attach to the face of the brass deflector, where the brass is leaving a mark. It only takes a small piece to attached there to ease your worried mind.

Mine were blue in color, a black marker made it all but disappear, it worked just fine.

TR
Thank you TR, that's all I needed to know...

S/F

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