The only ABs I've been less that thrilled about were the 110gr .257 version. I shot them at 3,00-3,100fps for a few seasons and caught quite a few bullets in 100-150lb deer. The recovered bullets retained a decent bit of weight, but I'm guessing the lack of overall mass and maybe too much frontal area hindered penetration a bit too much for my liking. I ran into the same issue when I shot 95gr NBTs in the .243win. Partitions and E-tips in the 6mm and .25cal stuff have fared much better when seeking a more reliable exit would around heavy cover.
