Watch the Metal Seven online guitar lesson by Stu Hamm from 50 Pro Bass Grooves You MUST Know
This 7/4 groove is really made up of two 7/8 grooves rather than being subdivided 4+3, or 3+4 the way that many grooves in 7/4 are. It is helpful that each of the 7/8 phrases has a distinctive riff that leads your ear right back to the downbeat of the next phrase, so you should be able to feel it, rather than having to count it. Bernie is laying down some serious 1/2 time rock bashing that is fun to play with. You definitely need to play this groove with some attitude.