Has anyone tried the E-TIP at extended ranges (5-600)? Big fan of their AB's and BT's but never shot the E-TIPS. Concerned with accuracy and long range low energy performance. I tried the barnes years ago and the best I could get was 1.5" groups at 100. The 270 Win in question will shoot half inch groups with the other Noslers. Terminally the barnes were awesome at close range on a spike elk.