11-24-2012, 02:49 AM
I had the exact same problem earlier in the year with a BHW 6X45 barrel....everything keyholed at 25, 50 & 100yds at normal velocity....sent the upper back, and BHW replaced the barrel & shipped it back. Problem solved, tho I never got an explanation for what caused it....Andy said "there may have been an anomaly."
George
George
