It all depends on what one wants to accomplish with the die setting. Partial resizing is great for case life and the theoretical "sized to the chamber" fit of the brass, but for slick feeding for hunting rifles, full length is probably better. In my case I use new brass for hunting trips and run each round thru the rifle before leaving home. I have had dies that would not touch the shoulder unless I went full hog on it, touch the shellholder and crank it down a bit more. Every chamber is different and dies vary as well, sometimes its the shellholder, lots of variables. For most of my general shooting I like to just feel the shoulder engage the chamber for a slightly snug fit, that way I know there are no headspace issues and brass last longer. If you full length resize every time and set the shoulder back every time, case life is shortened somewhat. With belted mags which are notorious for short case life, I try to set the die the same way and headspace on the shoulder instead of the belt.