In the field it is hard to tell the difference in the performance of the 7mm-08 Rem and the 270 Win. On paper the 270 Win has a slight ballistic advantage, but both cartridges are fine performers. It pretty much boils down to whether you want a long action rifle, or a short action rifle. I shoot both cartridges and I have to flip a coin to see which one goes to the woods. If I were you and already owned a 270 I wouldn't bother with the 7mm-08 Rem. BTW, you are not going to lose accuracy with a 7mm-08.