ya, I have seen smoke from time to time but now I just let the barrel cool. After all, when you take your first shot at game, your barrel will be cold, right? I shoot and let it cool, shoot-cool and so on. When I use T7 FFg at the range, I see smoke but I figured it was just dust from the powder when I pour the powder down the barrel. I dont think its smoke. If it was hot enough to smoke, wouldnt it set off the powder that was just poured in th barrel?