185 does well with retaining energy. As an FYI, I asked Barnes about the .338 185 TTSX and the 1800 FPS min opening velocity and the answer I got was that the bullet actually opened at lower velocities just fine but they published the 1800 to be on the safe side. Did not clarify the test material or what constituted "opening". So far it's been a great bullet for me. Only trying the 160 for variety.
