If there was moisture involved, for sure I can see the big differences in velocity ,
I tested some factory ammo a while back that was not stored well and had huge POI differences and hang fires as well .
I have never experience that in properly cared for factory Ammo however old it is
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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