I have heard people discuss that the published BC's for the Barnes X/TSX bullets are very "flattering", and not representative of real life numbers. I was wondering if anyone had any better numbers than the published ones, specifically interested in the 180 gr. TSX? I assume the only way to get them would be by using a chrony?

Thanks in advance for any/all help.

My own experience is that the 180gr tsx provides virtually identical trajectory to the 180gr ballistic tip.You would actually need two chronographs to determine the velocity loss over aknown distance to estimate the BC..

Would you not "also" need some very accurate weather info of exactly where the test was taken?

Drilling Man