I use Rem Oil to remove the bulk of the powder fouling then a quick scrub with Shooters Choice to remove plastic fouling followed by a very light application of Rem Oil for short term storage or Rig for long term storage.
This has worked well for me & I have uses this procedure for a long time w/o issues. As I use quite a bit of Shooters Choice for rifles & handguns it cuts down the # of solvents I need to have on hand.
I'm sure there are other procedures & products as good or better.
Joe Wood is correct in that you need to use care to not get Shooters Choice on the wood.
I do miss the aroma of the old style Hoppe's Powder Solvent though.