I have always been interested in the long single shot BPCRs. I am going to purchase one soon in 45/70 after I decide which brand to go with. I am interested in learning about the dos and don'ts of reloading for them. Currently I reload for a number of different modern loads including some hard hitting 45-70's for my WWG Co-Pilot. I have every intention of loading black powder in the future, time permitting but would like to start out using smokeless powder with either cast or jacketed bullets for the BPCR. I have been searching the net but am unable to find much regarding shooting smokeless powder and jacketed bullets in these rifles of modern manufacture. Will jacketed bullets shoot well through these guns or does one need to load cast bullets. If using cast or jacketed bullets and smokeless powder is there anything special one should consider? Can anyone help me get started in this or reccomend a book or other source of information?