Want to make some .45-70 shotshells

Ive got a bunch of .45-70 brass and with my .45-70 dies on the way, I wanted to know how to make some .45-70 shotshells for my Thunder Five revolver.

Is there a website pertaining to this particular subject (loading custom shotshells)?

I googled but didnt come up with anything that answered my question.

Any help is appreciated.