Split sourdough bread into 2 sections. Hollow out center of each bread section, leaving a 1-inch-thick shell. Spread inside of bread shells with apricot preserves. In one shell, layer roast beef, salami, baby arugula, red bell peppers, and goat cheese. Top with remaining bread shell.

Wrap tightly with plastic wrap. Place a cast iron skillet on top of loaf to press it down; chill for 6 to 8 hours.