Los Angeles ? Harry Potter is working box-office magic again, though the boy wizard couldn’t quite conjure up a revenue record.

“Harry Potter and the Chamber of Secrets,” the second movie based on the fantasy book series by J.K. Rowling, took in $28.86 million domestically on opening day Friday, distributor Warner Bros. estimated Saturday.

That’s about 11 percent behind the $32.3 million the first film, “Harry Potter and the Sorcerer’s Stone,” grossed on its opening day last year.

“We’re a little bit under that, but we’re still going to be in the stratosphere,” said Dan Fellman, the Warner Bros. head of distribution. “We’re on our way to a fantastic weekend.”

For the full weekend, “Chamber of Secrets” is expected to take in less than the $90.3 million gross of “Sorcerer’s Stone,” which was then a record debut, Fellman said.

“Spider-Man” set a new record last spring, grossing $114.8 million in its first three days, but Fellman said “Chamber of Secrets” is on track for the third-best debut weekend ever, ahead of the $80 million gross of the current No. 3, “Star Wars: Episode II – Attack of the Clones.”

If the estimate holds when final numbers are tallied Monday, the Friday gross of “Chamber of Secrets” would be the ninth-best single-day haul ever for a movie.

“Spider-Man” holds the top two spots on that list, taking in $43.6 million in its second day and $39.4 million on opening day. “Sorcerer’s Stone” places third and fourth with $33.5 million in its second day and $32.3 million in its first.