I’ve been using the .44 cal XTP on whitetails for about 15 years. For the first five in a muzzle loader with sabots. And for the last ten in a SBH Hunter. Both the 300 gr and 240 gr. Probably, 20 plus deer. Performance has been superb. I’ve got quit a collection of perfectly mushroomed bullets. At this point I don’t even consider using anything else. The muzzle loader, in particular, with the 300 gr XTP killed like lighting bolts. Deer would just fold and drop right were they stood. The pistol can’t generate the same velocities, but is still very dependable. The 300 gr XTP isn’t accurate enough in my SBH to justify it’s use.