Back in 1994 Zakk Wylde released his first self fronted album with his band Pride & Glory. It had a serious southern rock feel, to me at least, and included the song "Machine Gun Man." Check out this acoustic version of the song. The Pride & Glory album was reissued earlier in October, with 5 additional songs, including covers of Black Sabbath and Led Zeppelin. Read more about that HERE
If you already have the album, you know how good it is. I've still got my original copy, and break it out from time to time. If you haven't heard it before, it's worth your while to check out.