have shot a number of whitetails with my 338, lots with the old original X bullet in 175 gr and now with the TSX in 185 gr. All worked very well. Only recovered 1 bullet. That deer was hit in rear and went forward and found under the skin in front shoulder, 28" penetration and still intact. Plan on shooting a elk this fall with 185 gr bullets. Do not feel the need to go any heavier. Lots of elk killed with much lighter bullets. Plus I know where these shoot and groups are excellent.