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Now, after some unsuccesful research I need your help.
The Sturmtiger has this giant gun, and I have no Idea what to do with the inside of the barrel. How did the metal look after firing a few shots?
Should I rub graphite dust in or something?
Does the steel get red/blue shades from the heat of the rocket it fires?
Currently it's painted with AK's True Metal Steel and a dark gray acrylic wash was applied.