By Martha Ross From The Mercury News SAN JOSE, Calif.—Angelina Jolie and Dwayne “The Rock” Johnson have plenty of experience performing scenes with real guns and dummy bullets on the sets of their big-budget action films, but both are reconsidering in the wake of the Oct. 21 fatal shooting of cinematographer Halyna Hutchins. In interviews this week, Jolie said that “certain procedures” have to be taken “very seriously,” and Johnson said the shooting prompted him to pledge to stop using real firearms on all projects produced by his company, Seven Bucks Productions. Alec Baldwin, the actor who killed Hutchins and wounded director Joel Souza, had been handed a gun on the set of his Western film, “Rust,” and told it wasn’t loaded. However, it held one suspected live round that killed Hutchins and wounded director Joel Souza. “I can’t imagine what these families are going through,” Jolie said in an …