You can find nearly everything there is to know about Sniders on the British Militaria Forums, Snider sub forum. Shooting, reloading, values, variations, info on where to buy etc are all throughly covered. In addition, You Tube has a number of videos on reloading for this Beast. Same is true with Martini Henry and other old British guns which are all featured on this website. .577 Snider is my ultimate cartridge. Have fun!
Seamus
Seamus