Here is some information I've found over the past few weeks on making reamers and from them possibly dies. If your like me you might have the equipment but maybe not the skills or funds. I'm trying to learn how to use some of the equipment that I've accumulated over the past few years, and can't justify spending the funds. But, I have some spare time, others may not.
How to make a D-reamer. http://www.homemodelenginemachinist....s/-Reamers.pdf
How KTN (sticky in this forum) made his starting in post #145
http://castboolits.gunloads.com/show...ade-dies/page8
How another author makes a 5 flute reamer http://personal.geeksnet.com/soderst...berreamers.htm
This author show how to make a 6 flute reamer.
http://firearmsdesigner.com/?p=353
Each author shows how they indexed their reamers. KTN used a square block of material, and turned it 90* each time. The next author used a piece of tape and divided it by 5. The next author used a 6 sided holder (I think I can substitute a bolt head).
I tried making one like KTN's last week, and forgot to temper it back. It shattered like glass when I tried hand feeding it on my lathe. Several hours of work gone in a second.
I think some of these methods could be used to make reamers to form rifle sizing dies, which in turn can be used to form pistol projectiles. I know some of the guys are using Lee rifle dies to do this.
All these methods deal with straight walls, straight tapers or angles etc. I'm still trying to figure out if it can be done on an ogive.
Hope this helps someone.
CC