Copyright 2002 Riverfront Times LLC Riverfront Times (St. Louis MO) May 1, 2002 Wednesday SECTION: News/Featured Stories LENGTH: 6716 words HEADLINE: Firepower Those who follow the way of the gun have their many reasons. Just ask them. BYLINE: By Jeannette Batz BODY: The gun is an instrument of death; choose it, therefore, for its beauty and precision. -- an eighteenth-century father's advice Sunday afternoon. People stream into the gun-and-knife show that's taken over every available inch of the Wentzville Crossings Mall. Ignoring the bright-red funnel-cake cart outside the door -- craving grease and powder of a different sort -- they...