Taken from the Barnes website, FAQ's....



http://www.barnesbullets.com/information/bullet-talk/faq/

"What is the Triple-Shock X Bullet and what does it do?
Barnes’ Triple-Shock X Bullet offers all the deadly effectiveness of the time-proven X Bullet. Features include all-copper construction, no fragmentation, rapid expansion, 28% deeper penetration than lead-core bullets, and maximum weight retention. The TSX has proven to be one of the most accurate hunting bullets available–a fact countless shooters have confirmed. An exclusive feature of the Triple-Shock X Bullet is multiple, precisely engineered rings cut into the bullet shank. These grooved rings act as relief valves as bullet metal flows under pressure while traveling down the bore. Instead of flowing from the front to the base of the bullet, the copper material expands into the grooves. This results in reduced pressures and less copper fouling. Reduced pressures mean the bullet can be safely loaded to higher velocities. The rings also alter barrel harmonics, greatly improving accuracy."



Of course you would have to have a firm grasp on the physics to understand the concept,and it's been well documented that you don't/can't........