I've used 143s (6.5) and 178s (308) on deer with great success from as close as 150 yards and as far as 500. May try a 212 ELD-X in 300 RUM this year on an elk hunt but it's going to be hard to step away from the tried and true Accubond.
As for terminal performance on deer however, great bullet IMO. Then again, not much isn't good on deer size game at reasonable distances....