win 209, fed 209a, cci...
Several different bullets... SST, XTP,Barnes etc...
Sabots - yes and no depending on if sabotless.
Different types of powder. Different guns like different loads.
As a build the easiest was is having a 45/70 converted. Slufoot on dougs installs Savage breechplug.
ALOT of info is available on dougs message board. I would try to decide on gun, then look for loads people are shooting that have been tested with good results.