[55] Contrary to popular, criminal don't fire their weapons with any frequency. Kleck, op. cit., p. 79, reports that an engagement between police and armed criminals typically results in the suspect firing less than 3 shots, consequently, one or two boxes of cartridges can meet the criminal's needs for a very long time as ammunition has an extremely long shelf like when stored properly.

In the unlikely event the illegal supply of factory-made ammunition could be disrupted, criminals can easily handload their own cartridges and shotshells using commercially available reloading equipment and components (case, propellant, primer and bullet).