Shown below are some common ways of using sixteenth notes with power chords. Notice the accents on each beat of the bar. Practice each pattern until you can play it easily at a slow tempo, and then try increasing the setting on your metronome two points at a time until you can play them along with the CD.
In order to produce a heavier more aggressive sound, try using downstrokes on every strum of a sixteenth note rhythms shown in the following example.
Here are some examples which use eighth and sixteenth notes in various combinations. Take each one slowly at first and count out loud until you are confident with the timing.
This Metal Rhythm part presents quite a challenge. Take it slowly until you have all the notes and rhythms under control. Then gradually increase the metronome speed until you are ready to play it along with the recording.