I tried the TSX because they were accurate but not really impressed by this experience and it is only one so it is not definitive but I am plenty happy with cup and core bullets. I shot him and dropped him with a 115 bt so a 168 Tsx should have done the trick?
I can say that the faster a bullet is pushed the less penetration you will achieve. I haven't chrono my load but I imagine I'm getting 2900fps or near that with the 115's with I think is 51.0 grains of Reloader 22. It has killed everything dead. I usually end up shooting head or neck shots although this particular pig wouldn't stop moving his head so a lung/heart shot was taken. The heart and lungs do sit differently on a hog than a deer. So it is wise to know the vitals to make good clean kills.
Hit the pickle!