Starting this I questioned the validity of it, yet I have often wondered what happens to a hollow point at terrific velocity like the one I have in my attachments, a Sierra165 gr HPBT in .308 out of a 300 Win Mag. I don't know the B.C. of it but probably low. But what I wonder about is, the HP is square in shape & at 3,200 fps would that deform the HP at some point? I know it sounds stupid but open air with high humidity is resistance isn't it? I found this box I had laid back several years ago, just wanted to try it. I have several 30-06 & 308 & also have a Ruger Precision in 300 Win mag. Any thoughts?