WHAT DOES SIERRA GAMECHANGER 6.5 CREEDMOOR MEAN?

I have existed quite a few which have designed the same claims about 140+ grains of Eld-X and Berger (forgot which) bullets outside of a 6.5 Creedmoor for looking. Way a lot of deer to operate off and hardly ever uncovered or tracked for lengthy distances.My 1st group using this ammo would've healthy over a dime at forty meters by way of my CZ 457.