Is anyone reloading RST hulls & willing to share some 12ga recipes?
They are Cheddite hulls so you can use any recipe calling for that hull. Ballistic Products has a number of recipes in their reloading manual but they are pretty much specific for their lines of components which aren't usually cheap. Hodgdon had specialty loads in their shotshell manual utilizing common components if you can find a copy. Otherwise, Double Gun Journal and their website should be able to point you in a general direction. Failing that, any Federal recipe would work too if dealing with 2 3/4" hulls. You might have to adjust the crimp settings slightly depending on your components.
You'll need wads made for straight hull walls. As woodmaster81 suggested, load data for Cheddite will work. So will load data for Fiocchi.
Claybusters sells the wads cheap and has links in the wad pages for recommended loads. Hodgdon has some loads on their site, as well.