Just about any bullets you can buy off the shelf, that is designed for hunting, will work on deer. ELD-X is a fine bullet. They are like pretty much all bullets, they kill when the shooter does their job!Just purchased a 6.5 Creedmoor for my 12 yr old son to hunt whitetails with. I wanted something lightweight, and so wanted least amount of recoil. I bought a browning xbolt composite stalker. It Will be used in woods primarily, mixed with some farm country hunting. Expected shots under 200 yards. Which bullet kills the best from this caliber? I was planning on using 143 eldx. But saw some comments where guys weren't happy with them. Should I go lighter and get impact velocity up? Or just pick a different bullet?