Get the thermometer and try to keep your pot at 700 for best results. If you get to 900 or above the impurities can vaporize and become toxic, never a good thing. If your bullets are looking good chances are you aren't at the 800 level.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.