Here are some things to find out before you will be comfortable shooting a muzzy accurately:

When, with what , and how to swab between shots at the range and in the field?

What will you carry in your possibles bag and how will you carry them?

How will you carry powder and bullets so they don't get broken/deformed?

What primers you use depend on your powder? Got that figured out?

That is only a start but the list goes on. I wish you luck