Steve just picked up a brand new Dillon SL900 shotshell reloader and went to work churning out custom loads using it. He spends almost an hour walking us through the process, his thoughts, some tips and demonstrates how shotshells are reloaded.
Claybuster : http://claybusterwads.com/
Hodgdon : http://www.hodgdon.com
Dillon Precision : http://www.dillonprecision.com
Reloading Bench Design : http://www.shotgunsportsmagazine.com/downloads/bench_plans.pdf