The first one that presents a clean kill shot and fits your tag (not someones elses in your party) It' s real hard to fill a freezer with ambition. ( not very filling and often hard to swallow) There are a lot of elk in Colorado, and a lot of country. Like some of these other guys have pointed out: Take your first, best, opportunity. You' ll feel like a genius when you sit down to that first piece of loin.