There are no stats on that. All we can go on is what has been written. However, notice that his field goal percentage shot up to 0.68 (From usually being in the low .50s) in 1966-67, once Wilt stopped being a volume shooter, and stopped regularly taking fadeaway jumpers from far out.
That's true, and a good point, though 1967 is a bit of an aberration (as he went down to 54-59% the next four years before finishing his last couple years on high %'s again on very low volume).
But those are regular season stats. And you know full well that regular season basketball in that era was a bit of a joke. When you look at the playoff stats, the change in Wilt's shooting %'s isn't nearly as meaningful: In 1967 he drops down from his regular season shooting of 24ppg on 68% to only 22ppg on 58% in the playoffs, and that was boosted by an easy matchup in the first round. Better shot selection isn't the whole answer - he doesn't lose 10 points off his shooting percentage between the regular season and the playoffs unless the increased defensive intensity of the playoffs was having a real effect on his shot.
And, in fact, 1967 still remains an aberration - the very next year he dropped down to 53% shooting, and from 1968-1973 he would continue only average 53% shooting in the playoffs and 45% from the line. That's remarkable for a player who is 7'1" and 280lbs in that era, especially one who is being careful with his shot selection as you say he was.
For Wilt to only be taking 9-18 shots from the field, be more careful with his shot selection, have the defensive pressure pulled off of him by elite scorers like Hal Greer and Jerry West and Elgin Baylor and Gail Goodrich and Jim McMillan, and for him to STILL only make 53% of his shots despite being taller and bigger and more athletic than virtually everyone else he faced, lends strong credence to my position that he was not an "unstoppable scorer" in the 2nd half of his career.
Of course, when you take into account the fact that those were the years that he had a 16-foot lane, those were the years that he started to have to face guys like Nate Thurmond and Willis Reed and Kareem in the playoffs, and it seems more naturally like something you can expect.
I've wasted far too much time in my life reading every article, every book, every website I could find about 1960s basketball. And your theory regarding Wilt's decline in scoring has never been raised by anyone who was there at the time, including those who were habitually critical of him (and there were plenty).
The idea that the move from the 12-foot lane to the 16-foot lane limited post scorers, and was done specifically in order to limit post scorers, is very well established.
But I agree with what you've been not-so-subtly implying throughout this thread - understanding of basketball strategy was in its infancy in the 1960s, and neither coaches nor commentators had a tenth of the knowledge of the game that they do today.
Which is to be expected - even Einstein didn't know as much quantum physics as a grad student in the subject today, random street rappers drop a greater diversity of rhyming patterns than the legends of the 1980s, and the average high school football coach shows more sophistication in his offensive and defensive schemes than the NFL coaches of the 1960s. It's not their fault - understanding of the game is going to improve over time, and with that commentary on the game as well.
It is very well-documented that Alex Hannum asked Wilt Chamberlain to score less and relinquish the scoring title in 1966-67.
Yes, I've certainly never disagreed with that - it's a strong part of my point. Truly unstoppable scorers don't help their team by reducing their scoring so dramatically that far more inferior scorers are taking twice as many shots. The fact that the only years in which Wilt piled up big scoring stats (as you note - on poor efficiency) happen to be years in which he found little playoff success is a good indication that he was not, in fact, unstoppable.
It is very well-documented that Wilt was bored with scoring and was intrigued by the possibility of leading the league in assists in 1967-68 (which he did).
Yes, and also documented that that was a quick aberration, an experiment for the year, and he almost immediately regressed back to his mean, only averaging 3.6 assists/game over his last 5 years.
As well as further proof of my point - forced to set up further from the basket, he became more of a facilitator and less of a scorer.
It is very well-documented that Wilt sacrificed when he went to the Lakers in 1968-69 because he was joining "Elgin and Jerry's" team, and that to make things work, Chamberlain spent a lot of time stepping out, setting screens, and making sure he didn't clog the lane so that Baylor could drive.
Again, not making him sound like much of an unstoppable scorer. We've seen this all the time - Oscar joining Kareem's team, Magic joining Kareem's team, Clyde joining Hakeem's team,Shaq joining Wade's team, Lebron joining Wade's team, Durant joining Curry's team - and the players either fall into the roles for which they are best suited at that stage in their career or the team collapses. When the new player is legitimately the better scorer, they soon take the role of scoring more, regardless of whose "team" it was before them. Wilt was better when he wasn't a primary scorer.
It is clear that Chamberlain had a very serious injury in 1969-70 and was never the same afterward. And finally, it has been documented in countless sources how Wilt reduced his scoring even more in 1971-72 (when Bill Sharman became the Lakers' coach) and started playing the "Bill Russell role" almost exclusively. In his last two seasons, Wilt hardly ever shot the ball! But from everything we know about his team during those two years, Wilt was easily the most important player on a juggernaut Lakers team.
This would be a better argument if his playoff performances in 1970-71 didn't look substantially similar to his playoff performances in 1967-1969, or if his 2nd title and Finals MVP hadn't come in 1972.
But I do agree that he was a different player in 1972-73. And, very clearly, not an unstoppable scorer.