Just received this from Barnes last week...a little confusing?

Thank you for shooting Barnes Bullets. For the .308 150 gr TSX the minimum impact velocity for reliable expansion is 1800 fps. For the 150 TTSX, it is 2000 fps. The reason the 150 TTSX is higher is that bullet get shot a lot from the 300 magnums and so the muzzle velocity is higher, sometimes a lot, and thus the impact velocities are higher. Hope this helps.



Thank You

Alan Griffith | Consumer Service
Barnes Bullets