"Burn baby burn!" then "paint baby paint" and "grease baby grease" as fast as possible.
Nothing rust faster than a freshly burned drum. I suggest that you paint tha outside with high temperature paint as soon as it cools off and "grease the inside" with bacon grease quickly.(with a regular controlled charcoal fire)
Bill Napper. Team Cook "JoeJo's BBQ"
Custom offset stickburner
Gas assisted cabinet smoker (400 lb. capacity!)
55 gal. drum smokers galore! (All custom built)