Have more experience with the TSX than the tipped version. I like to have at least 2000 fps for reliable expansion.
The TTSX may open better at lower velocities down to around 1600-1800 fps.

At 400 the 100 grain will be at around 2000 fps the 80 slightly slower. Both should work if limited to that range.


"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli