Sentence examples for big hits from inspiring English sources

"big hits" is a correct and usable phrase in written English.
It can be used to mean either a successful (usually commercial) achievement in various fields, or a blow that causes major damage or injury. For example: "The movie was a big hit at the box office, making millions of dollars in its first weekend of release." OR "The football player took a big hit during the game, and had to be taken off on a stretcher."