Give you a few general sizing observations.
You don't have to run the brass all the way in a sizing die. As a rule less you work the brass better off you are. Most size a little see if it works then record the depth to repeat same size every time. How much depends on your chamber and the loads. Some guns need full length every time, Automatics for example, they have to feed with little resistance and when dirty. Something that has a lot of cam power like a double closing can deal with brass that's not sized full.
lube helps sizing considerably, Imperial sizing wax is the standard, takes very little to make a hard job easy. Brass that's been worked a lot often needs Anealing. It gets work hardened and brittle if not.
RMC Brass being lathe turned not drawn, sizes a bit different. I have found it has less "spring back" after firing and needs re-sizing more often. Not a negative just keep your eye on will the sized brass chamber before you load up.
You can make simple soft steel ring dies, they just don't last as long as hard steel factory dies. Very old loading manuals show photos of soft steel home made dies and cases driven in with a hammer. I make my own neck bushings for rifle calibers in a CH4D universal neck sizing die. Try different sizes before hardening it.
CH4D makes about any die you could want, custom is not real expensive.
Boats
