Keith Candler campaigned several of those awa 243AI. He was an unabashed speed freak. He loved blasting rock chucks n props into the next time zone.
The 6 RemAI bbls always outlasted the 243AIs. The only reason that we could figure was the longer neck that kept the convergence point further away from the throat.
He has done a 6XC that had less than .008 land recession after 800 rounds pushing a 107 Sierra at 3150 or higher. The neck was around .380 long. Accuracy was only high zeroes or low ones for those 800 rds. It only had a 30° shoulder.
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