Brass Diagnosis

[Mutt]

Howdy everyone.
I'm hoping I can get a diagnosis on what happened to this brass.
It is Remington brand .223 REM. I'm not 100% certain this is my brass, I could have picked up a half dozen or so of someone else, but if it is mine I'd like to know what causes it.
I don't crimp so if that's what it's from then it definitely isn't mine.

Thanks for the input.

 

[Advokaten]

Re: Brass Diagnosis

That there dude, is some very good photo of a case mouth that was a crimped load,

depending on use,

just FL size and reload or put them in the pile for plinking rounds.

/Chris

 

[Victor N TN]

Re: Brass Diagnosis

Have you ever measured your chamber? That's what the "step" in the case necks looks like.

You really need to keep range brass seperate from what you have shot in your rifle. This can cause something to be diagnosed that isn't even with your rifle.

I'm not saying don't pick up "range" brass. But you really need to keep it seperate.

 

[shoot4fun]

Re: Brass Diagnosis

It looks to me like photo shop happened to it.
But it could be either chamber too short of case too long. But the case on the right has just too sharp a ledge for me to think that was done in a chamber.

 

[Mutt]

Re: Brass Diagnosis

Thanks for the replies!

10-4 on the range brass being separated. I normally load Lapua brass for coyote hunting and use my Remington brass for plinking so that's easy to keep separate. This was from a plinking day with a couple hundred rounds fired of each type. I should pay closer attention, though.

shoot4fun: Photoshop? Why would you say that?
I edit all my photos in Photoshop and Lightroom so it's <span style="font-style: italic">technically</span> "Photoshopped" but it's not altered/faked at all. Really just blown up and sharpened a little.

 

[shoot4fun]

Re: Brass Diagnosis

Not pointing a finger. Just saying that case on the right looked very strange. I've never seen one like that in my 40 years of shooting.

 

[Mutt]

Re: Brass Diagnosis

Ah, I see. Me either to be honest. That's why I freaked a little when I plucked 'em from the "dirty" box. Sorry.

I don't think they're mine. I chamfer and debur too.
Provided that is a crimp ring as Swedish guy suggests, it looks like this a good case against crimping brass.

Thanks.

 

[shoot4fun]

Re: Brass Diagnosis

The markings in the case on the right look a lot like the bore of a barrel. I would think a crimp would be blown out by neck expansion. Brass is not normally hard enough to retain that profile after firing, at least IMHO. And, as you say, it appears those were never chamfered.

 

[bohem]

Re: Brass Diagnosis

An extra long case is going to have a tapered look to it as the nose of a reamer is not cut with a square edge but a ~45* angle to the FB.

These are once fired, factory crimped cases. Looks like that on my Remmy factory 30-30 cases.

Bad news is that the visual doesn't quite go away once it's been FL sized, but after a few rounds through the die and firing it will be almost gone.