case question

Discussion in 'The Ammo & Reloading Forum' started by ryan42, Jan 28, 2012.

  1. DixieLandMan

    DixieLandMan Member

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    I also think that the easiest way to tell is if it has a circle with a + sign in it. I may be wrong but I think that is the way to tell if mil spec or not.
  2. jim brady

    jim brady Well-Known Member

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    That stamp on the case head - the circle with the p - is just a symbol that the cartridge was loaded to NATO specs. Again, I'm not sure at all if the case itself is any different from civilian specs. As far as 'military cases being made thicker than civilian cases', I really don't know that to be true.

    The case necks are usually annealed, and the primer pockets are often crimped, but other than the usual differences in case wall thickness variance from manufacturers, I doubt if there is any real differences.
  3. JLA

    JLA Well-Known Member

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    Im in Godley/Joshua area. Bout 35 miles SW of Keller.
  4. langenc

    langenc Member

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    That idea that military is thicker has been around a long time.

    I recently weighed many cases-223-military and commercial. Little difference in weight. Some gunwriters/shooters are getting away from that idea, also.

    Federal (FC) seems to weigh the heaviest.
  5. BlackEagle

    BlackEagle Well-Known Member Supporting Member

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    Is case weight as important as interior volume for interior balistic purposes (pressure, etc.)?
  6. jim brady

    jim brady Well-Known Member

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    BlackEagle - the answer to that is one and the same. The reason that one brass case (if case lengths were exactly the same) would be heavier than another would be because of more brass = less available volume for both the powder charge and the resulting increased pressure from that charge.

    Most of us casual reloaders measure our charges - sometimes each and every charge, we often weigh our bullets, insist on the same lots of powder and primers, and trim our cases to the exact same lengths to insure as much consistencey as possible, and get what each of us considers very accurate ammunition.

    Bench Rest shooters are a different breed of cat. They are EXTREME in checking and weighing EVERYTHING and ensuring that exactly everything is the same. This includes the cases. Again, as a casual shooter, I like to make sure that my cases are the same maker and, if I can, the same lot of production. A true bench rest shooter would hold their nose and walk away from my ammo.
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