Case capacity question

Discussion in 'Reloading' started by Suburban, Mar 8, 2010.

  1. Suburban

    Suburban

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    I'm running out of the brass that I worked up loads for, LC 02 5.56mm brass, so I've checked the capacity of some other brass that I have on hand.

    LC 02 - 30.3gr water
    LC 03 - 30.5gr
    LC 07 - 30.2gr
    WCC 03 - 30.4gr

    No more than 1% difference, according to my calculations. Do you think the difference in capacity is enough to make a significant difference?

    I've loaded a lot of pistol rounds, without bothering to work up loads for each brand of brass, but I'm a little unsure of what to do with rifle rounds.
     
    Last edited: Mar 8, 2010
  2. fredj338

    fredj338

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    Nope, until you start seeing a 1gr or larger diff in internal volumn, you'll be fine. If/when you go to commercial brass, you'll find they often have higher volumns/thinner brass.
     

  3. dudel

    dudel

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    Sounds like a reasonable variance. There's a bigger difference in case volume between .223 and 5.56 (5.56 having less capacity). Don't recall of the top; but I believe .223 has a larger capacity than 5.56 than indicated by your variances.