I've tried to highlight the track mark I was talking about. The yellow line runs straight up the feed ramp, centered from left to right in the lowest part of the curved surface - which is where I thought the rd should feed. The red line tracks off-center to the right, and doesn't appear to be straight - assuming that this is the wear pattern from the nose of the bullets pushing up the ramp. It ends at the chamber opening at about 7 o'clock position, instead of dead center at 6 o'clock.
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