Back when they first came out. I zapped a small bear at about 10 yards with the 140 Accubonds out of my 270 Weatherby Mag at 3250 fps. I was happy with the results. It was a broadside double lung shot and the bear just rolled down the hill dead. Haven't hunted with that rifle much since then but the 140 Accubonds are the standard load for that rifle.
Great performance on elk, moose, bears, deer with my 270WSM's using factory and now reloads of 140gr Accubonds....does not hesitate to use this bullet in your 270