The accuracy of any cartridge in this class is more dependent on how good the bullets are, and with how much precision the rifle it is used in was made. In this regard, the .270 is just as accurate as a .25/'06, .280 Rem., or .30/'06 if bullets of equal quality are fired in good barrels properly installed on the action, and the whole assembly well bedded in the stock.

Shorter cartridges exemplified by the .284 and .308 Winchester families tend to be a little better. Short powder columns result inmore uniform ignition. In addition, short actions tend to be stiffer, which also helps accuracy. This may also be true of the short-short magnums such as the WSMs and the SAUMs. I have no experience with these yet, so cannot say for sure about them.