The Partition was for many years my bullet of choice for elk. After trying the Barnes TSX & the Hornady GMX I discovered they far out penetrated the Partition. The homogeneous copper with a liter bullet will out penetrate heavier Partitions. The Barnes TSX & Hoenady GMX have a much higher BC which means a faster time of flight & a flatter trajectory. The copper mono's tend to retain 100% of their weight even thru heavy bone. More hunters are trying them & understanding their ability.. Buy one box of Barnes 110gr TTSX & try them on game. You will be very surprised at their ability..