I found this brilliant piece of footage on the Barnes Bullet website showing a .308 180 grain Barnes Triple-Shock X-Bullet fired into a 6″x6″x16″ gelatin block at 2907 fps, the expansion rate in the block & deformation of the bullet is truly amazing.
Chris
http://www.barnesbullets.com/videos/308_180gr_TSX_6fps_logo.wmv
Chris
http://www.barnesbullets.com/videos/308_180gr_TSX_6fps_logo.wmv