AC/DC earns its first Billboard 200-topping debut with “Black Ice,” blasting onto the chart with the second-biggest sales frame this year. The Columbia set, released exclusively through Wal-mart, Sam’s Club and AC/DC’s Web site, moved 784,000 copies in the U.S., according to Nielsen SoundScan.

AC/DC topped the chart in early 1982 with “For Those About To Rock We Salute You,” which climbed to No. 1, but did not debut there. Thanks to deep discounts at Wal-Mart, the band’s back catalog enjoyed a huge week, shifting 92,000 copies combined. “Back in Black” went from 9,000 to 21,000, while “High Voltage” rocketed from 4,000 to 11,000.

At 7.07 million units, sales this week are up 8.3% from last week’s sum and down 15.2% from the same week last year.