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flats on case shoulders after resizing

Discussion in 'Ammunition & Reloading' started by Mark W., Feb 19, 2014.

  1. Mark W.

    Mark W. Silverton, OR Bronze Supporter Bronze Supporter

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    I'm doing a batch of .243 mixed head stamp mixed source cases.

    And on a few of them I noticed that the shoulders have been flattened so that they are almost like a tapered octagon?

    I assume this was caused by too much lube being tapped in the die. But its also such a low percentage of the cases and so random through the batch of 200 that that really doesn't make sense.

    Anyone have a clue? IMG_5741.jpg

    IMG_5741.jpg
     
  2. My 3 sons

    My 3 sons Bonney Lake Active Member

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    Too much lube is most commonly the cause for me. I use very little on my .308 and 5.56 cases just enough to reduce resistance.
     
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  3. Nwcid

    Nwcid Yakima and N of Spokane Well-Known Member

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    I have to go with lube also.
     
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  4. SinisterSouthpaw

    SinisterSouthpaw SW WA Active Member

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    That's not how I remember my over-lubed case looking lo, these many moons ago, but as 3 says, too much lube is a common cause of dented or flattened shoulders. I like a very little Imperial Sizing wax to lube my cases- of course, the "little" part will vary with the size of the case, but less is more no matter what case you use. Besides, help stimulate the economy and buy a stuck case remover.

    You might segregate those flattened cases when you go to shoot and reload next time. The problem will probably not reappear, at least not on all the cases, and will probably disappear altogether if the lube application is reduced a bit.
     
  5. erudne

    erudne The Pie Matrix PPL Say Sleeping W/Your Rifle Is A bad Thing? Bronze Supporter

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    clean all your dies w/solvent.
    I switched to spray case lube so I know how much is on each case
     
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  6. Mark W.

    Mark W. Silverton, OR Bronze Supporter Bronze Supporter

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    Thanks guys Ive not seen this really in the past I use RCBS lube on a pad but just started wearing a m
    nitrile glove which may be holding more lube for the cases to pick up
     
  7. bballer182

    bballer182 Molalla Active Member

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    I'll echo everyone else. Too much case lube
     
  8. HappyRoman

    HappyRoman Sherwood Forest Bronze Supporter Bronze Supporter

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    2-thumbs up for 2 much lube, same happens on 223 for me. They will shoot out
     
  9. bellarum

    bellarum beaverton Well-Known Member

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    Consistency/uniformity is key to reloading. Take the same care and time in every step. Don't get over confident that you "think" you have it "down". I treat each case/round in my process like it's the first one every time. I have that kind of time and patience. If something ever does come up it won't be because I was in a hurry.
     
  10. bballer182

    bballer182 Molalla Active Member

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    Yeah. No big deal. If it chambers, shoot it.
     
  11. Marine Airedale

    Marine Airedale Central Oregon Coast Member

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    Yes, too much lube ... I use spray lube myself. Never have had a stuck case since switching to it either.