I prevoiously posted about a local gun store raffle and everyone on hear alerted to me the raffle prices were too high so I did not throw in my lot. I however want to get as the thread title suggests a Single Shot Black Powder Cartridge Rifle for Deer Hunting. I hunt White Tail Deer in the state of Maryland. I only hunt in Maryland so I dont need Cape Buffalo size rifles. My state does require the rifle to be a Straight Walled Cartridge. Ease of reloading doesnt matter to me so long as there is brass available or brass that can be reshaped to fit a different caliber. I have Black Powder, lead ingots and I have large rifle primers at my disposal. I was looking at old US Army and Cavalry Trapdoor Springfields sine they seem quite plentiful. Originals though no repros as they are very expensive. I wanted to ask if there is a major velocity difference between a 32" bbl Rifle and 22" bbl carbine. I see also online that the Rifle was loaded as a .459" 405gr bullet and 70gr charge and the carbine was loaded as a .459" 405gr bullet and 55gr of powder. Was this done to lessen recoil or because the carbine cant handle the 70gr charge without serious damage ? Also what would be better for deer ? I know the carbine is an easier carry but where I hunt its mostly open ground. Will a carbine suffer from this ? Does anyone have any other straight wall SS BPCR suggestions besides the trapdoor rifle ? If so lay em down and your opinions in the comments below thank you.