This is again an important distinction, one which is based on the advantages that you intend to derive from your handgun. You should carefully consider the pros and the cons of each very carefully. For instance, a revolver is less likely to jam than a semi-automatic, it is easier to use but the trigger might be harder to pull, especially in the case of double action gun. On the other hand, it is more difficult to ‘rack’ a semi-automatic, and a person who has limited strength may not be able to slide it properly. On the bright side, the semi automatic has a lighter trigger pull and more cartridges in general.