If you have an old Barnes manual or an old Barnes bullet chart & compare with the BC charts on the new web site, you will see a big difference. Barnes has re-evaluated the BC number for all of the TSX bullets. The BC numbers on the old X bullet were optimistic for
one thing, & the grooves on the TSX increased the drag coef. for another. Some of the TSX, like these .45cal are fairly new & I don't know why the number would not have been figured right to begin with for these. I would like to hope it is a typo, but I bet not.
However, at the yardages that we would be shooting these, it won't matter much anyway. They will fly great out to 250 yards & a little more with hotter loads.