Looks the same. However, looking at Federal's site they offer bullets that are not available as a TTSX. Well, one example I ran across anyway was a 200gn Trophy Copper for the 338 Fed. No such thing as a 200gn TTSX.
That's the EXACT reason for me asking... I was looking up options for my 338 Fed and saw the offering and knew a 200 gr. TTSX wasn't on the market as far as I knew...