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Data in the Lyman manual.....

Discussion in 'Reloading' started by racer11, Jul 29, 2012.

  1. For each caliber load data listed I see under each bullet..

    BC and a length in thousands and SD and a length in thousands.

    What measurement are they giving me and how do I use it in my reloading. I know what OAL stands for but not BC & SD.

    Pulling my hair out.....LOL

  2. fredj338


    Dec 22, 2004
    BC & SD are ballistics numbers, completely unrelated to reloading safety. Read the book, it tells you what the numbes mean.
  3. Zombie Steve

    Zombie Steve Decap Pin Killa

    May 31, 2007
    Old Colorado City

    Sometimes I imagine Fred like this:


    While I feel like this: