I have a Harvester 300 that I sent back twice for "baffle failures". It worked flawlessly for approximately 2,000 rounds on a 22" 7-08, a 21.5" .243., and a 22" .280 Ackley. I then put it on an 18" 6.5x47 and started to run into trouble. Both times, the baffle closest to the crown...