The confusion about sizing terms is cropping up again. When I use a FL die to produce .002" shoulder setback from as fired dimensions, the neck, the shoulder and the body, i.e. the full length of the brass, has been sized. So that is full length sizing, set up to suit a particular chamber. That's what some call partial full length sizing, a bit of an oxymoron. They use the term full length sizing for reducing the case to like new dimensions, or nearly so, so it'll fit in any chamber that comes along.