The author and a Weatherby Vanguard .375 H&M Magnum pursue feral pigs in the 'Earthquake Capital of the World.' Halfway between California's Bay Area and the sprawling urban megalopolis of Los Angeles lies the Central Coast, a range of green hills and oak forests. It's home to a good portion of the Golden State's remaining agricultural land, and in hamlets such as Parkfield (population 18 or 34, depending on whether you believe the city limit sign or the abandoned railway car in the center of town) you're more likely to see flatbed pickups and cowboy hats than sports cars and...