I am another one that has shot pretty much everything with a 7x57, an old Ruger with a Leupold 2-7x Euro scope. It shoots consistently .7 with several loads, never needs sighted in, and I have so much confidence with it that when it goes off, something is going to die. I would venture a guess that I've killed more game with a 7x57 than many of the internet commandos have killed period. As far as the original question, it doesn't really make any logical sense to change a 7-08 into a 7x57, they are one and the same. Of course logic would tell me I only need a .223, a .22 lr, a 7x57, a 12 ga shotgun, and a .375/.416 to kill everything on earth. I have more than five guns.