Candy, ice and lottery tickets have long been impulse items sold at checkouts in American grocery stores. Now bullets are joining the list of merchandise peddled to consumers as they exit at a growing number of stores around the country. Dallas-based start-up American Rounds rolled its first automated retail ammo machine into a Fresh Value grocery store in Pell City, Alabama, late in 2023, selling various brands of rifle, shotgun and handgun ammo.Subscribe to The Post Most newsletter for the mos