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Originally Posted by MAB32
Gene Econ,
Sir, I am probably comparing apples and oranges here but when I shot my Garand last weekend I noticed a difference in the recoil of the weapon and the pattern pretty much stayed the same too. The M2 ball that was left out in the sun for about 15-20 minutes (90+ and sunny) seemed to have changed the recoil to more of a "wham" against my shoulder than those that were kept covered (ie., more gradual and not nearly as abrupt). Did that hold true for your guys?
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MAB and guys. My computer is locking up when I try to respond so if this gets through then fine. Will make it short though as I fear it won't send.
MAB -- get me at
eugene.econ@lewis.army.mil so I can respond to your BC message.
Short but sweet -- you are using a military lot of extruded powder made at least thirty years ago. I have found military lots of extruded powder to be more sensitive to temperature changes than military lots of ball powder.
Don't confuse military IMR powders to commercial IMR powders although the names are the same. The military names powders based on burning characteristics and commercial powders tend to be more consistent in manufacture and less sensitive to changes in temperature.
Gene