I really appreciate all the responses. The first thing I did was to start sanding with 320 grit wet using Walnut Oil. That really turned the piece so dark you could barely see the veination. So, I sanded that back and hand sanded (dry) horizontally off the lathe thru 2000 grit and picked up MM at 4800, and dry sanded off the lathe using the remaining MM. Then back to the lathe @ about 1800 rpm; did 2 coats of Ren wax buffing with old tee shirt between coats. Barrels looked great, BUT customer wanted a more durable finish than just wax.
Ugh - afraid of what might happen with CA, my only option was to use what I had on hand - PensPlus. I suspected it would darken the blanks from my attempt at wet sanding with Walnut Oil. And it did. So 2 coats of Pens Plus followed by 2 coats of Ren wax, and customer fortunately is quite happy.
Just to give me more options, based on some of your responses, I ordered some Mylands Sanding Sealer and Mylands Friction Polish. I'll try to post pics tomorrow of the finished pen. The pic I already posted is sanded thru all MM followed by Ren wax.
Thanks for your help.
DrD