I use Sandsponge most of the time. Or 0000 steel wool. I also tumble with dry, uncoated walnut shells. BTW, sorry for this late reply. I just found out tonight (12-1-008) about this feature. I don't think I like it as much as PM's. They seem easier to navigate through.
Tried posting a link for your question...follow this link... Adjusting the remington 700 trigger: although the new model 700 trigger is a complete redesign of the old, adjusting it for pull weight, travel, and sear engagement is still as simple as A, B, C. | American Gunsmith (August, 2007)