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First major boo boo

 
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  #8  
Old 08-21-2011, 10:53 PM
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Re: First major boo boo

You can size the neck up to .35 or 375 with a ball expander and then resize, head spacing
off the ring you leave near the bottom of the neck. I've done it with 22-250 brass and
it worked fine. I used a 6mm ball expander.
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  #9  
Old 08-21-2011, 11:17 PM
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Re: First major boo boo

What action are you using this on. I know you said you had 1,000 rounds on it, but I guess there's always a chance of set back if it's an older Mil-surp receiver.

If not, I would back off on the FL die or just go to neck sizing, with the occasionoal FL if need be.
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  #10  
Old 08-21-2011, 11:28 PM
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Re: First major boo boo

Quote:
Originally Posted by spitfire_er View Post
What action are you using this on. I know you said you had 1,000 rounds on it, but I guess there's always a chance of set back if it's an older Mil-surp receiver.

If not, I would back off on the FL die or just go to neck sizing, with the occasionoal FL if need be.
it is on a mauser 98, but the barrel was a custom made one and the bolt face was opened up when I had the gun built that 1000 or so rounds ago. The last batch that I shot out of it 3 weeks ago showed absolutly no sign of head seperation at all, thats why I'm pretty sure that I did something different this time. Just driving myself batty trying to figure out what it was and how it happened so I never have to go through this again. The worst part about this for me is I was pretty proud of the accuracy I was getting, I thought I was getting pretty good at this reloading thing. Has definately knocked me down a notch or two for sure

Last edited by bman73; 08-21-2011 at 11:33 PM.
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  #11  
Old 08-22-2011, 01:21 AM
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Re: First major boo boo

Your load doesn't look too hot, reviewed my Nosler book, and it's not a minimum load, but your velocity is where it shoud be.
1000 rounds doesn't seem like much-I played with the long magnum Ackley version in .358, and got that many. A borescope would help define this a bit better. I don't think being worn would cause this kind of problem.
The old brass giving up, doesn't trouble me, but brand new brass, in a cartridge that has a belt for headspace even if you pushed it back sizing it, should just fireform. I wouldn't expect it to last doing that, but once?
I'd pull everything at this point, but is there any possibility of a powder mix up? If you've got something to measure with, compare loaded and fired dimensions against what saami states. A trip to the gunsmith to check things over, seems in order.
Just thinking with my mouth open, but it was fine last batch 3 weeks ago, and has suddenly had a major change. I'd check everything, but I'd triple check powder.
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  #12  
Old 08-22-2011, 02:01 AM
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Re: First major boo boo

Quote:
Originally Posted by HARPERC View Post
Your load doesn't look too hot, reviewed my Nosler book, and it's not a minimum load, but your velocity is where it shoud be.
1000 rounds doesn't seem like much-I played with the long magnum Ackley version in .358, and got that many. A borescope would help define this a bit better. I don't think being worn would cause this kind of problem.
The old brass giving up, doesn't trouble me, but brand new brass, in a cartridge that has a belt for headspace even if you pushed it back sizing it, should just fireform. I wouldn't expect it to last doing that, but once?
I'd pull everything at this point, but is there any possibility of a powder mix up? If you've got something to measure with, compare loaded and fired dimensions against what saami states. A trip to the gunsmith to check things over, seems in order.
Just thinking with my mouth open, but it was fine last batch 3 weeks ago, and has suddenly had a major change. I'd check everything, but I'd triple check powder.
Powder was even from the same can, had 12 from a new lot that I had seperated as I am always leery of mixing lots just in case 1 is hotter than the other and didn't end up shooting them today anyways. After seeing the 2 brand new ones cracking as well I just called it quits for the day. It did kind of rattle me to see a case come out in 2 peices to be honest with you. It was a first for me and all I could think about was the worst case scenario of the action blowing up in my face. Not too sure if it could of or not but the image did get stuck in my mind. I am in the process of trying to find a neck sizing die so I don't do this again, the only one I have found is the Hornady and it's on backorder only from wholesale sports. Any suggestions anyone?
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  #13  
Old 08-22-2011, 03:11 AM
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Re: First major boo boo

Okay so I have now backed off my die, took one of the .338 brass I have laying around that had already been through this gun 2x now, used a candle to soot the neck and ran it through the press. It looks okay to me but I also thought it was okay before as well. Here is a pic of what I ended up with, let me know if it looks like I might still be going to far with it or should I give it a try at this depth?
Attached Thumbnails - Click to View Larger
First major boo boo-dscf0015.jpg  
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  #14  
Old 08-22-2011, 03:56 AM
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Re: First major boo boo

I'll keep watching hoping you find it, maybe it will be obvious to someone and they will kick in. So far I haven't told you anything you don't know, and I'm at the end of my meager skill set.
I hope you find it in a hurry I know some bear units open about this time, and the others real soon. Good luck
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