The 200 SST failed at 338 Fed velocities? That's not good. I have the 200 SST, but they shot miserably on my initial attempt. Admittedly I have not fiddled with seating depths to see if I can make them better. The 185 TTSX has shot so well with TAC I quit trying other things. Shoots great and less recoil than the heavier bullets. 2725 without even the slightest hint of pressure. I will try the 200 Trophy Bonded Tips once they are available as in my mind a 200gn is just right for the 338 Fed (based on nothing mind you). Although, all my ballistic nonsense charts (I like to over analyze) tell me the 185 TTSX ought to put as much smack (official effectiveness term defined however I want at the moment) on the target as the 200 given my projected 200 velocities of 2620-2650. If I just 'have' to use a heavier bullet I have a load with the 210 Scirocco II that shoots VERY well at ~2560.