My 6x45 Photos / case separation

Originally Posted By: GuidoOriginally Posted By: fw707Any update on the new batch, Guido??

We should have both 18's and 20's rolling out for sale Monday at the latest. We're going to add them to our webstore too to make for easier ordering.

Does this mean that those of us that have sent an email to get on the list should be getting an email on them?
 
We're just awaiting bbls right now, and as soon as they get here everyone that sent us an e-mail will be contacted.
 
Well I really thought I found a load this barrel liked. I used X-terminator 25.8gr and 75gr v-maxs. Well I had not one but two cases completely split in half. I would say thats some pressure. No problem what so ever until then. I double checked everything and my power measure was throwing very consistent loads. I looked at the other fired rounds and several primers flattened and cratered. I think I am going to back off 1 full grain and re-shoot tomorrow. I knew I was pushing some warm loads, never split 1 case let alone 2. I will post some pics after the race is over....as a side note it was a great day in college football. Nebraska and Ohio St both went down
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If by split in half you mean case head separations, that is not a sign of high pressure. It is caused by case stretching because you resized too far(pushed the shoulder back too far). If you mean split necks that also is not an indication of high pressure, just the need to anneal.

Jack
 
I just need to take a photo and post it. If you took a case and had the strength to snap it in half like a pencil...thats it.


The second one split in half farther up the case about 1/3 down from the shoulder. Never had this happen before ever and now 2.




Added Photo

6x45.jpg
 
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Definitely not a high pressure problem.
It sure is a resizing problem.
The separation was a lot further forward than usual, but that could be because of the brass.

Jack
 
Originally Posted By: Jack RobertsDefinitely not a high pressure problem.
It sure is a resizing problem.
The separation was a lot further forward than usual, but that could be because of the brass.

Jack

I've had four of these same seperations in a 6x45, all with low amounts of slow burning powders. Faster powders and more of the slow burning powder loads hasn't produced any seperations, even with same cases, brand wise and resizing routine.
Brass was WCC.
Also have a few marked with a ring in the area others seperated at. These from loads going up weight wise with the slow powders.
Are you sure its only a sizing problem???
 
Originally Posted By: hntr4lifeI had this same trouble on factory ammo. never did figure it out.

Was the brass failing with new manufacure ammunition? Or were you re-using the factory brass?
 
it was ammo I had bought at a gun show it was not anything I loaded. as far as I know it was new brass from the factory. the only thing I can tell you is that it was not from a brand name like federal or remington. I just don't remember the brand name right now, and I have tossed everything in the trash so that I don't reload any of that brass just in case it was weak brass.
 
I tend to agree with Jack because I would think that although your load sounds like its on the warm side you normally blow primers pretty quick when they get too warm.
You need to check your brass to make sure you are not setting the shoulder back too much. You can use a precision mike gauge such as the RCBS one in .223 to check because the shoulder should be the same.
I have loaded some warm loads with XTerminator and about six other powders and have never had a case do that.
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Brass these happened with are LC. The Redding dies I have I looked at and I will make sure I am not I am not bumping the shoulder back hard. I would be surprised if that is it. The other shell separated even farther up. I saw where another guy said he had the same thing in his 6x45. I am wondering if there is something quirky with he 6x45 to be aware of. Its been super straight forward reloading. I will aslso check the head spacing but doubt thats.
 
Originally Posted By: Droopyfur2Also have a few marked with a ring in the area others seperated at. These from loads going up weight wise with the slow powders.
Are you sure its only a sizing problem???

I have seen a ring in the chamber cause cases to separate like this. The comment that Droopyfur2 made about seeing cases with a ring in the area where others had separated is a clue that should not be ignored.
 
Originally Posted By: DtechOriginally Posted By: Droopyfur2Also have a few marked with a ring in the area others seperated at. These from loads going up weight wise with the slow powders.
Are you sure its only a sizing problem???

I have seen a ring in the chamber cause cases to separate like this. The comment that Droopyfur2 made about seeing cases with a ring in the area where others had separated is a clue that should not be ignored.



Outstanding pick up there D-tech

I will inspect my spent cases for anything like this, I assume this would be caused by tooling marks?
 
Originally Posted By: DtechOriginally Posted By: Droopyfur2Also have a few marked with a ring in the area others seperated at. These from loads going up weight wise with the slow powders.
Are you sure its only a sizing problem???

I have seen a ring in the chamber cause cases to separate like this. The comment that Droopyfur2 made about seeing cases with a ring in the area where others had separated is a clue that should not be ignored.




Not to rule anything else, because I'm curious to see the outcome, but I highly doubt its a chamber problem because it sounds like it happened on a few rifles using a few bbl mfg's.
 
Originally Posted By: KAG

Outstanding pick up there D-tech

I will inspect my spent cases for anything like this, I assume this would be caused by tooling marks?

It's not unheard of to have brass fail for no particular reason, like the brass pictured. The statement about the visible mark in the same place as other cases have failed may indicate a ring in the chamber.

When cutting a chamber in a non-production setting, chips pile up in the flutes of the finish reamer. If chips are allowed to pile up too long, they can cut a groove in the chamber wall, and are often not even noticed while the chamber is being finished. When a cartridge is fired in the chamber, the brass can flow into the flaw in the chamber. When the brass is sized, the brass is pushed back where it belongs. Brass, or any metal for that matter, doesn't like to be moved back and forth very much. After a few shots the brass will get brittle and fail.
 
Mine is more of a crease than a ring around it. Ok I looked at some fired cases and there is indeed a scored / indented area on many of the cases. The cases have a crease across them, I tried to get the best photos I could be had to change some lighting to get it show better but it still did not show it as well as the naked eye. I really wish I could get the creased cases to show better.

Thanks D-Tech,

Thoughts .......



6x45006.jpg




6x45007.jpg



6x45007-1.jpg


 
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