I was raised on a farm by a dad who could build anything and he taught me to do the same. I say that because everything I use to make this brass is homemade. I modified the bolt and made a center fire firing pin a few years ago (since the rim fire ammo has come out I made a rim fire firing pin, just in case I want to try it). I ordered dies and brass from Schroeder. Looking at the brass I saw that the base and rim were turned on a lathe. That gave me the idea that I could make it.
I made a die that would size the Hornet brass down to .260. Next step was to trim most of the brass off. I made a die to form the neck, by trial and error I found that the brass needs to be annealed first. I them trimmed to length (I do this now because I have yet to make a collet that will hold a 5mm in my case trimmer). Now to the lathe, turning the base and rim down was a real pain because of the multiple steps that had to be done. One day I figured out how to do it in one step.
I turned a piece to mount in my tail stock that would help support the brass and provide a shoulder to turn to. I turn toward the tail stock in this operation.
The idea I had to do all the turning in one step was to grind a tool bit that, when the head was turned to .260 the rim thickness and diameter would be correct.
Full length size, clean up the brass and load.
Time wise I would be better off to order the brass but there is a good feeling I get from doing something myself.