hkyplr
Member
It is a matter of numbers, a quick search came up with WM having over 8500 stores world wide. There is no single other ammo retailer with anything close to that number of stores. WM only has to sell a fraction of ammo per store compared to other retailers to still sell the most ammo considering the company as a whole. And I would be Willing to bet that when WM places an order for their DC (distribution centers) they bring in a truckload per DC, not just a million rounds or so.