For the cost of a Co-Ax you can buy a much more useful and rugged press by buying a used but excellent condition RCBS A2 press or if you are lucky an A4. Both of these presses will easily perform forming and swaging operations that would wreck the Co-Ax. Even the Lee Classic Cast will handle heavier tasks such as .50 BMG.
The Co-Ax is a light weight design that is differentiated by mostly by marginal value gimmicks. It is ok for a simple reloader to FL size and seat bullets but if you want to do heavy duty case forming, case head swaging or bullet swaging it is not going to be up to that heavy duty use. Case head swaging capable splitting reloading dies would push a sizer die through the lock ring of a Co-Ax.
The so called advantages of the Co-Ax amounts to
1. Disposal of primers when many other presses dispose of primers the same way
2. A floating shell holder - Most shell holders do not fit the case head that closely so the floating factor is all in the mar
the co-ax press was never designed to do the things you talk about. I get great bullet alignment with this press. let's face it if you want accurate and precise loaded ammo the co-ax is the way to go. If you want to swag bullets and load .50 cals get a different press. like I said I been using it for over 35 years (had rcbs press and lee presses ) I can't find anything better for the kind of reloading I do.
keter's imagination. Clarence Purdie's company Bonanza designed that maybe 40 years ago and it was for most of that time ignored by the reloading world. Ever try Wilson inline dies? If you really think floating is important just skip the shell holder and use Wilson dies.
3. Slip in dies using the lock ring. Heavy duty use would probably break the die lock rings so this is a negative in my experience. The threaded die body is much stronger. Any misalignment of the lock ring will tilt the die when the end load of sizing is applie