I did experience this in a 6A at about 250 hours.
Initially I attempted to salvage the landing. After the first bounce each subsequent oscillation grew progressively more severe and steep. On the last one the entire windshield seemed to be filled with pavement. I finally added power, had one more light bounce, and went around.
The incident was sufficiently severe for me to remove the gear leg and have it magna-fluxed. I also had to rebuild the front of the nose-gear wheelpant which had been severely abraded. You can take a look at a -6A nosegear to understand the required geometry.
Having gone through the experience I would never again attempt to salvage a landing like that unless absolutely necessary.
FWIW, there was nothing unusual about the approach. Winds were light off the nose. I had never experienced a similar problem in the couple of hundred landings before, or in any since. A thorough post-flight inspection revealed nothing wrong with the plane, which leads to the only logical conclusion being the pilot.
John Allen