I know the answers sound harsh, but they are right.
It would be better to know which round you are talking about. Some need to be crimped, some do not. Some need a heavy crimp, some work best with a taper crimp, others with a rolled crimp.
As for how to set up a separate crimping die, best to read the instructions that came with that die.
Inside Every Bright Idea Is The 50% Probability Of A Disaster Waiting To Happen.