While it may not be a critical factor the 265 FTX was designed for a 444 and 2315 FPS with 100 grains of BH your getting about 1500 FPS at longer ranges this will drop considerably. A deer with a 44 or 45 hole through the vitals will die a well placed bullet will bring them down usually inside 150 yards. Bit the same hit with a bullet that is pushed at the velocity its designed for is generally much more effective.