Chuck Berry shuffle is actually involving only the three low pitched strings most of the time.

Holding the Grand Barre finger in place to do that is asking for premature tiring and even pain, but relearning the hold such that only the two strings actually involved are being fingered works very nicely. (the 3rd string in the barre is typically an octave of the root anyway, or sometimes the dom7)

The "rhythm" guitar player can find and study other chord fingerings that work even better in a lot of cases than the Grand Barre scenario, often leaving out notes that are superfluous to the chord when playing with other players, keyboard, bass, etc. And the results will sound less "muddy" while you enjoy playing more, without resorting to having to "clamp and cramp" like that.



--Mac