I've found 178 ELDMs to be scary accurate to 1000 yards with the .308. 1000 yards is easy with them and I can consistently hit a 12 inch steel plate. 1200 is a lot more difficult.
My rifle is an AX, 24 inch, 12 twist barrel. Pushing the bullet at 2770 over 44.5 grains of RS52, Lapua Brass...