Nervous "Pics Added"

super90

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Minuteman
Dec 2, 2007
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Livonia louisiana
Last week I had a case split in three on me.Now I am a little paranoid shooting the rest of the rounds.I took the rest of the loaded rounds and weighed them and they are all within 1 grain of each other.The question that I have is does 55.5 grains of varget under a 165 grain Hornady interlock with fed 210 primers sound like it would have too much pressure.
 
Re: Nervous

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The case is on the far right.Split is on the shoulders.
 
Re: Nervous

I’ve had similar issues with my Winchester WSM brass.
Inspect you brass before you load and look for what looks like vertical lines or folds in the brass from the neck forming. I get about one or two per bag that looks deep enough for me to discard.
I anneal every piece now before I load, also check neck thickness if it looks like your still getting overpressure signs.
In my chamber it wants a neck thickness of 0.015” or less and I’ve seen the Winchester brass have 0.019” high spots in the necks.

Hope this helps.
 
Re: Nervous

Everyones QC seems to have slipped during the last panic/shortage.I have had Win 223 and 300WM get neck splits on the first firing.This caused me to buy an annealing machine.You can buy a lot of cases for what a machine cost,but I put a lot of time and work in my brass.Hate to only get one loading from them. Lightman
 
Re: Nervous

Probably was just flawed brass, inspect the rest of the brass to ensure there isn't any cracks or seams in the rest of them. I have had a piece of winchester brass split just like in your picture, and it was due to a crack on the shoulder that made it through my inspection by accident.
 
Re: Nervous

Looking at the pics, this has nothing to do with anyone's reloading, and annealing isn't going to correct the problem. This is a factory defect, and shouldn't have even made it past their QC inspectors. It's caused by brass that's a bit on the hard size, combined with a relatively severe necking operation. Sharp shoulders and smaller bores exacerbate the problem, but that's what it is. We see the same thing most frequently in two of our cases as well, the 6.5x284 and the 6mm BR. Both have rather sharp shoulders and require a lot of metal movement in creating the shoulder and neck during the final forming step. If the brass is too hard, it tends to "fold" rather than flow, as it should, and the result is what looks to be a crack. It's not; it's a fold or crease.

If you ever find anything like this in our brass, let me know and we'll replace it. This kind of stuff should be caught at final QC, but sometimes defects do get through. I don't know what their policy is, but if they don't replace it, it's a straight cull. Toss it into the scrap brass can and write it off.
 
Re: Nervous

Bad brass, stress cracks for sure; normal pressure would easily have done it.

A collet bullet puller would be faster but can easily damage bullets. An impact puller is slower but won't damage the bullets if you have a foam ear plug or similar cushion in the bottom.