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AA data says Max case length 1.526" Min case length 1.520". When I measured my chamber length it measured at 1.540". Other than trimming cases to uniform length most members here will tell you that your cases will most likely never need to be trimmed.
Yes, the case lengths for the Grendel are all over the place. Accurate/Ramshot list a Min of 1.495 and a Max of 1.515. A while back I asked Johan at Western Powders why there case length data was different than Alexander Arms data. He told me that the numbers they published were the exact numbers supplied to them by Alexander Arms. Go figure?
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