"T i m" wrote in message
...


So, on the grounds I've little to lose (I'm probably in for a new
valve anyway[1]), if I could gently hold said bullet in the lathe,
what sort of tool (hand or machine) would be most likely to get me
re-surface this without ripping it up do you think please?

The rubber is about the consistency of a pencil rubber.

Some fine wet or dry paper I would think.

Just cup it in the hand and rotate the rubber slowly.