RE: OS .46SF- Re-Ringing
Mr Bigg,
I agree with Ross.
Frank makes rings are probably even better and for sure less costly than the OEM.
The purpose of the honing of the sleeve is:
1. To break any glaze that exists, which might otherwise interfere with the break-in of the new ring (too smooth a surface will not wear the ring down to a perfect match).
2. To create miniature scratches that hold oil, to facilitate break-in...