Wipeout, Patchout, Hoppe's Elite Copper Terminator, and Sweet's are all good for cooper removal. #9 still works, it's just slow. You need to be careful with Sweets or Copper Terminator to not leave them in the bore too long or get them on most stock finishes and some plastics. Kroil seems to help with lead deposits. Butch's doesn't do anything that I can tell except doing a fair job with carbon deposits. I haven't had a chance to try Bore Tech.
