Barnes book says .379 BC for the 185 gr .338 TTSX? Irregardless they shoot well in the Montana behind IMR 8208.
Not sure where you got .379. According to Barnes website, the 185 TSX is .352, while the 185 TTSX is .432. That's pretty good, as it's even better than any of the 200gn bullets. Starts faster (it's lighter), and it slows down less. That's a good combination.
