I just got back from an Ontario whitetail hunt. Two of us used Accubond bullets (factory federal premium). Both of us had similar results...
My deer was about 250lbs, broadside shot, 50 yds. 165gr., .308. The bullet entered just behind the right shoulder, pulverized the heart, shattered the opposite shoulder and exited. The exit wound was about as big around as my thumb. The deer fell flat to his face, and kinda scurried off about 30 yards before it died.
My buddy shot a bit smaller deer (~200lbs), slightly quartering, 50 yds. 160gr., 7mm Mag. The bullet entered just behind the right shoulder, and exited the opposite side a bit further towards the rear of the deer. This deer wheeled and ran off about 30 yards before it died.
In both cases the Accubond performed well. The deer both suffered massive internal injury and died very quickly. We both saw good, if not excellent, penetration on large whitetails. In my .308 (Sako 85) I had 1/2 moa accuracy (1 hole 3 shot groups).
One thing to note however is that both deer had almost no blood trail. We were hunting very dense forest and had some trouble finding very tiny amounts of blood. This was a bit of a surprise.
-nosualc