I have an m1869 werder rifle and would like to fing ammo for it. It appears to be 30 - 32 caliber. All the info I have found says it should be 11.5 x 50 or 60 but mine is smaller caliber. Looks like a 38 - 56 winchester casing but smaller caliber. Can anyone give me info on this? Sorry, this is all new to me. Not highly educated on reloading of firearms and caliber sizing.