+1 of grinding the tip off. I still have my early 1970's Craftsman impact driver and all the original trimmed bits and never a broken one. Also allows the bit to seat deeper into the Philips or JIS head for a better grip. If it bottoms out on the original point chances are the blades are not fully seated in the screw slots. I learned this from a boat mechanic who had to deal with corroded screws in outboards used in salt water.