I've used both the Brownell's tool/brake hone with an extension rod I made & the emory-paper-on-a-stick routine. The grit on the stones for the Brownell is very fine, not quite polishing, but close. Takes a long time if the bore is really rough, plus need to be careful to keep the extension rod from hitting the side of the barrel when turning. It's also limited by size; won't fit small smoothbores, like .410. The emory paper route works (taping is good, I'll try that next time), & you can vary the grit to end up w/ 600. Fire lapping is a chore also, I've used valve seating compound, but have to clean thourghly between shots & I suspect could even put microscopic ripples in the barrel: just a guess.