Thread: .270 reloading dies questions

so i got given some .270 reloading dies they look rather old and are lyman branded i'm not to die savvy but i think there is a full length case die and a neck size die plus a second rcbs neck size die, why would you need two of them but different branded? they do like quiet different. also do they wear out and as i dont have a .270 would anyone be interested in swapping for some 308 dies ? i have a press with the idea of getting 308 dies but haven't gotten around to purchasing them, still learning all this reloading terms etc maybe i should post a picture ?