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Range Report Military ammo testing

memilanuk

F'ing nuke
Full Member
Minuteman
  • Mar 23, 2002
    2,461
    751
    East Wenatchee WA
    Hello all,

    An acquaintance passed me a few data sheets from some lots of M118LR. Very interesting information, but some of the info leaves me with more questions than answers.

    The MV listed was somewhat low... mid 2500s, but I believe its been discussed before that the military (or whoever does the testing) measures the velocity @ something like 78ft down range, vs. the 10-12 that most of us do.

    So in the interest of being able to properly 'read' and interpret the data sheet, I'm curious if anyone can shed some light on the 'AEHS' and 'AEVS' terms under the 'Accuracy' section. I *think* they would stand for something like 'Average Extreme Horizontal (or Vertical) Spread', but I'm not sure. If that's right... how do they measure an 'average' extreme spread? Is this another term for 'mean radius'?

    Thanks,

    Monte