It could be that Andrew is right about needing heavier wts to see real progress. I note that Bib’s fantastic results have been achieved with heavy wts.
It’s a common misconception that Bigger achieved fantastic results with heavy weights. In actuality, he made the majority of his gains using moderate weight, and only tried heavy weights for a brief period of time at the end of his hanging career.
Check out the Most Effective Hanging Weight; Clarifying Bib’s History thread to read a discussion on the topic of Bigger’s gains and the most effective weight to hang.