Can you post a pic?
Although the 700 appears to use a shrouded/push feed design, I can't visualize how the bolt extends much past the extractor groove.
Q1: Can you feel ANY burr on the inside of the shroud?
Q2: How about the edges of the ejector cutout in the shroud? smooth or sharp?
Q3: And does the base of the case show a round imprint/smear where brass might be flowing into the ejector slot(hole)?