When I took 'range safety officer (RSO) it was recommended that cold water be available for shooters towash hand w/ immeiately after shooting.
When in college we would go to the ROTC range and shoot, eat lunch etc. definitely a no no. After classes we went to work for 4 to 6 hrs. all w/ the same clothes!! WOW.
Today you should shoot. When finished wssh hands, change clothes and probably shower. How many do that?