I don't even like to let my bore season during shooting. When I was young and gullible, I had a wonderfully seasoned bore (as instructed by the lube manufacturer and local users) that rusted quickly. When the accuracy went south, I started getting rid of all that beneficial seasoning (which in the kitchen would be call baked on crud) and found a nice layer of rust. Two days of lapping saved it (thankfully), but I haven't used a seasoning lube or left anything in the bore after cleaning except a protective coat of oil since. Haven't missed it, either.