Winchester 40 S&W brass. tight/undersize primer pocket issues?

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anothernewb

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Had an interesting run in with some win brass. The primer pockets were so tight that I was destroying primers before they would seat. On inspection of the brass, the pocket appeared to have the outside edge of the old primer remaining in it, as best as I could tell. It looked like there was another band of metal in there. at least that's what it appeared to be. It was really odd.

I tried a number of things to remedy the situation thinking that it might just be really tight pockets - as some of my 45 brass is that way. I went so far as to ream out the edges with a drill countersink but to no avail. I could seat a primer in perhaps 1 in every 10 to 20 cases

It was an entire lot of the cases, more than 100 in all that were all off. I ended up throwing them all out in frustration - but I am still wondering. Anyone else come across something like this? I find it hard to imagine I punched out more than 100 primers in a row that only removed the center. The primer catch cup was certainly full of complete primers.
 
Cases were likely sitting outside for a while allowing corrosion to glue together the primer and pocket. Ive had this happen a handfull of times, specifically with pmc 38 spl. Just scrap it and move on. Removing that little ring of brass in the pocket isnt worth the effort to salvage a 3 cent piece of brass.
 
I have seen one in 357sig. It was a nickel Speer with a remaining brass ring inside the primer pocket. Luckily I normally clean my primer pockets, so I was able to detect it before the priming stage.
 
brass is gone now, but it was winchester spelled out. I would have to dig in the garbage to show one. I may do that this evening, if they're still there.
 
I've seen that also, most recently in a .38 special case of mine that's never hit the ground. Stuff happens
 
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