Just loaded up some 100gr TTSX in my 260 doing about 2975. Hopefully I'll have a report this weekend. Should be a good killer.
Any particular reason why you stopped there?
You can push those TTSX 100's up to 3,250 fps. in the 260 Rem.
DF
Could use a different powder to get faster, but used what I had. 99% of shots will be under 100yds, so don't need it to be 10% faster. And not gunna mess with .5 MOA accuracy.