I am a little confused about this die. Can you bump the shoulder back with this or does it just squeeze the neck down to where it should be. I am planning on getting a redding die set but don't know if I should go with a deluxe set(FL Neck and seater) A two die set with a Lee collet or just go for the type S set with neck bushings and micro seater. This will be for a 308 to shoot little holes at a long distance,hopefully. I just don't want to spend the dough on a set and then find out I should have bought another.