Concave Primers...?

ma smith

Old Salt
Full Member
Minuteman
  • Sep 29, 2020
    2,792
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    Never seen one of these before, got two last night. Chalk this up to you "learn something new everyday." This was from the "set aside" pile from my lmatch ammo. Chrono says -20 fps beglow mean (both witin 1 fps). sSo the good news is the process worked. Bad news is I didn't take detailed notes. Curious to know if folks here have experience with this at all.

    Pic from accurate shooter (not mine, but it looks same....)

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