I don't know about reloading the RST's but I don't see why not. As far as reloading 2 1/2" shells, you will have to buy a 1/4 " spacer to go under the last two stations because of the shorter hull or make one like I did out of aluminum. Mine goes under the last three stations so that I could put two screws to hold it in place. You can take any good quality 2 3/4" hull, Remington Premier, Gun Club and cut them down to 2 1/2" and either 8 crimp or roll crimp them. If you go to the Alliant Powders site, there is a low pressure load there (7,800 psi) for the 20 ga. Remington hull. For 16 ga. I either roll crimp which I like, takes longer but looks nice, or use a 6 crimp. I use the Cheddite hulls already primed with Cheddite 209 primers (interchange with Win. 209)