I don't train pullups anymore (have switched to weighted chins instead). My all time best was when I was 20, and I managed 33 in one set. I definitely was not going all the way down and I weighed in somewhere around 170 pounds at the time. Before I switched over to chins, my all time max was 135x3.
I would train pull ups 3 to 4x a week, and my back did blow up from it.
I would train pull ups 3 to 4x a week, and my back did blow up from it.