Buying the extra "T" is never a bad thing. Just as with powders, you're getting the "extreme" line of bullets which produce more consistent results and less sensitivity to temperature and speed.
Not surprisingly,
the TTSX emulates the Partition in many cases by shedding a portion from its front. Bullets which open very consistently, yet penetrate deeply - even after the loss of the initial 'bloom' and at the expense of some mass, have a very long track record for reliability. Those who hunt in warmer climes may not notice these advantages as much.
Of the 15 or so animals that I've shot with 168 grain TTSX bullets, I've only recovered these three. The other bullets either completely shot through the animals, or I didn't make the effort to recover them.
![[Linked Image]](http://i36.photobucket.com/albums/e3/buffybr/Misc/308_168_TTSX_zps92274773.jpg)
I think that the one grain weight loss on the two bullets on the right was only the loss of the plastic tip.
These 180 grain Nosler Partition bullets that I recovered from elk each expanded back to the partitions and lost about 40% of their original weight.
![[Linked Image]](http://i36.photobucket.com/albums/e3/buffybr/Misc/180_NP_zps79b2e670.jpg)
