Get some plastic wedges and a long handle ax to drive them home. Your chain will touch the wedge once and you will thank me! Also, when felling a good size tree, you will want move force on the wedge than that little hammer can provide (I have wedged over heavy Red Oak over 40" in diameter. Used 3 sets of wedges, each double stacked. It is what it takes. The tree was near a house and could not be tied, and half the neighborhood was watching me!
Especially if you are using wedges when dropping a leaner, to prevent the pinch, and when the cut is complete the wedge drops toward the B&C. INVALUABLE!