The 25-36 case length is 2.12 and a 25-35 is 2.04 with the only real difference being in the length of the neck.Cant help you on reforming from 30-30 as Iuse new production 25-35 brass in my 1893 rifle.Since the 30-30 is the same length as 25-35 you will have a short necked 25-36,but more like 25-35.I say short necked as the 30-30 brass will grow in length when down sized,but probably not as far as .080BillyHill said:Hello All. I have a bunch of 30-30 brass that I want to turn into 25-35 brass. I have very little experience with case forming. I was thinking about starting with a 7m-08 die and then a .260 Rem if I could find one. Has anyone had experience with forming 30-30 to 25-35? I think doing it in in one step is probably too much to expect. Does anyone know what the case length for the 25-36 should be as I am doing this for a buddy with and old Model 93?