Carbon and burnt deposits left behind that 'purge' more difficult (probably) than clean lube. Then bore condition? How do we keep it uniform? I believe like Gear said that most lube is applied to the bore by some "greasing the skids" process, good or bad. I believe "wetting" agents help in the overall process but cause their own set of fouling to contend with. ...Eutectic
Right on! That's the name of the game: keeping the barrel uniform is the lube function, no matter the composition of the projectile. The lube can be of any style, be it taken in the form of a jacket, check, or grease, etc. Anything short of the use of a ramrod. ... felix