Sizing 9mm cases

SW 357Mag

May 05, 2007 08:24

Hello,

I just bought about 1500 9mm cases. Been sizing them about all day. About 70-75% of them size easily and just fine. The others however require a lot more force to size, like a large rifle case. They are all WIN brand and the same lot. Once fired - not new brass. Any ideas why some of them are so much harder to size?

Is it same to go ahead and load them or does this indicate a problem with the cases?

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  gravley

  May 05, 2007 10:37

  Sounds like the primers were crimped on those cases. If you sized them they should be ok to load. Might check the case length also.

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  bpost

  May 05, 2007 11:08

  Ammo shot in machine guns tend to make the brass tough to resize. Some chambers are a bit sloppy to allow good function. Also, some guns have a pretty large unsupported area to allow good feeding. Those cases probable are a bit hard to resize too.
  
  Resize and shoot the brass as normal. you may find it has a short reloading life but it should be just fine.

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  SW 357Mag

  May 05, 2007 11:24

  Alright, thanks guys.
  
  I'll go ahead and load them.

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  1911a1-fan

  May 05, 2007 13:33

  nickel are always hard ti size, if they are not nickel make sure they are not swadged? before seating a primer

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  Mobuck

  May 06, 2007 13:20

  I buy quite a bit of range brass and find the same deal. The stuff is fired in many different guns and some of them are pretty sloppy. Once in a while I get one that is way too hard to size and just pitch it. Some will show a belt around the base and those are trashed. I never check case length and very seldom have a problem. This is practice ammo so a FTF is not a problem and I just pull the bullet later and load in another case. For ammo that really needs to work I only use known brass and use more care in culling.

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  franksremote

  May 18, 2007 08:16

  Use One-Shot

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