shield bash wasnt all that useful in most fighting, remember its basically PUNCHING range.
Shield rim shots however were used to great effectiveness by shielder cultures like Greeks & Vikings.
6 minutes into this video, watch the use of shield rim. Shield rim shot = arm length + radius of of a round shield. So a wide round shield that has radius of 35-42 has some pretty good reach and offensive use.
Remember Greek shields were bronze covered/rimmed, rim shot someone in the face and good chance of killing them.
