From what I've read the ELD-X's work just fine close or far as long as impact speed is less than around 2900-3000 fps. It won't be a problem in your rifle.
FWIW I've been working with that bullet in my 308. I'm getting 2630-2650 from a 22" barrel with outstanding accuracy. It shoots better than Accubonds for about 1/2 the price.
If I were shooting a 300 magnum I might lean toward the Accubond as it will hold together better at close range at magnum speeds. But in your 308 I'd think it is an excellent choice.
