For starters, the AccuBond is a Ballistic Efficient round with an aerodynamic BC of .509 - enabling more downrange energy on target.
Example:
When comparing a bullet's energy in a 30-06 versus a 300 Win Mag, if you put a premium 180-gr. Nosler AccuBond bullet in a 30-06 at 2,750 fps MV and compare it to a plain jane Winchester 180-gr. Power Point in a 300 Win Mag at 2,960 fps MV, the 30-06 AccuBond will have an amazing 104 ft. lbs more energy at 300 yards: that's right - 2,005 versus 2,001 (Source: Winchester's 2005 Ammo Catalog, p. 10 - 13).
So you see the 180-gr. AccuBond with a BC of .509 easily makes up for and passes the 210 fps velocity advantage the 180-gr. Power Point had because of its much lower BC of only .349.
In this case, the 30-06 180-gr. AccuBond outperforms a 300 Win Mag 180-gr. Power Point at 300 yards.
Moreover, a Nosler Technician recently reported that in comparison to the Hornady InterBond, the AccuBond not only expands more than the InterBond (providing more shock), it also penetrates more by shedding shrapnel along the way to the point where the slightly smaller bullet actually penetrates more than the larger mushroom on the InterBond.
The AccuBond's design took 4 1/2 years in the making.
I like this bullet because it provides excellent expansion and its unique ability to slowly shed weight enables it to penetrate more than the competition, so you get the best of both worlds.
http://www.nosler.com/accubond.html