30%
Technically a well-maintained medium-long blade is more effective than a blunt, but a blade will lose more effectiveness over time if not maintained. A blunt is only effective if you smash the brain completely, whereas a blade can decapitate with less effort and won't throw you off balance if you miss. This says almost nothing about current supplies or what to do with what you have now, it focuses too much on the fact that you've already survived a month or more.