iqbal, no the two cartridges are not compatible.
They are similar in case dimentions and that's why it was possible to chamber and fire the 25-06 Rem round in the 270 Win chamber.
The 25-06 has a smaller bullet diameter than the 270.
.257" for the 25-06 and .277" for the 270.
It is NOT a safe practice to attempt to fire anything other than 270 Win cartridges in a rifle chambered for the 270 Winchester.