I don't own a gun barrel that is not coated with Sentry Solutions, 'Smooth-Kote' PASSIVATED (minimally hygroscopic) molybdenum disulfide solution. Clean up is amazingly fast; and, while I do not own a chronograph, myself and several of my friends, all, think that my bullets seem to go a little bit faster and hit a little bit harder, too. (I don't know; but it seems and feels that way.) Personally I wouldn't be without a bottle of, 'Smooth-Kote'. I really like it.
'Wisdom To One Is Foolishness To Another; But, Alas, A Fool Knows Not The Difference; And, The Road To Hell? ...... It Remains Well Trod By Those Who Should Know Better.'