I have no idea if Will's description is accurate - but have no reason to doubt it. I'm just offering some clarification on the Western 8½G primer. My information comes from the NRA "Handloading" book, which mentions this primer being used in .30/06 and .300H&H match ammunition. I'm sure the major ammunition manufacturers used to occasionally hand-assemble small batches of special ammunition for high-level teams and events. The ammo described by Will sounds like a plausible late-1950's load for serious competition.
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