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  1. C

    Range Report Ballistics Notation Question

    On some bullets there are multiple ballistic coefficients. They usually have an (H), (M), or (L) after the coefficient. What do those notations mean and how do I know which coefficient to use? Thanks!
  2. C

    Rifle Scopes IOR 308 BDC ballistics model?

    Hi, I just purchased an IOR Valdada 2-12x36 for my AR-10. It has the 308 BDC ranged from 100 to 800 at 50yd increments. Does any one know what the ballistic info is for those marks? The web sight says 'NATO 168gr', but JBM's ballistic site doesn't include any such round. Can someone either...