You've probably already run across this info but I'll put it out there anyway, durofelt makes some nice wool felt and the price is not bad at all. I couple of months back I ordered a piece of their FM1824H wool felt and been impressed with the number of wads I'm going to be able to punch out of this one piece. I've punched out 120 or so and have only used a small corner of the sheet of felt, this one piece is gonna last me awhile!
I'm basically following gatofeos recipe for felt wads and they do work great for keeping the 58 lubed up enough to keep shooting.