Before I got my tumbler, I use to just wash the brass in hot soapy water, rinse and then run them through the reloading steps.
I always decap (punch out the primer) after I have washed/cleaned the brass because I did not want to get dirt in my dies.
Some of my brass has been reloaded 15 times and the black carbon inside the cartridges has never affected the performance. Reload and start enjoying yourself.
Inside Every Bright Idea Is The 50% Probability Of A Disaster Waiting To Happen.