I would say you are a heavy user.  When I first started, I had flirted with snuff before but I was still a smoker, I think I was using about 8g’s a day to help me stop smoking.  I think it was about two months later before I started cutting down. Now I am 2-3 g’s a day.  However, some other people I know never cut down and still use 10g’s a day.