Anyone used this tool. It appears that you stick it in your gun and get the exact case length and bullet seating depths for your individual chamber. If this is true it would really be a great tool!
The bullet seating part of that gauge leaves a lot to be desired. You are using a plastic bullet that has a different ogive than the bullet you plan to use. I tried one and ended up giving the gauge to another loader who used the headspace part for measuring his brass.Rick.
the OAL/seating function is not exact, but it does give you a good place to start most of the time. What it is really good for is measuring headspace and setting up your FL resizing die