Thanks for the info Jimmy.
I think you must mean the dies you mentioned are for reloading the 577/450. The neck dia. on the 577 is .602. I can't see how a 460 or 480 die would work considering the base diameter is only .504 for the 480 and .478 for the 460.
I know that there is new 577 brass available but at the prices they are asking, I was hoping to find a trade. I don't really want to use shotgun hulls to fire the old girl. I have 28 ga. hulls I could use but I prefer having the correct head-stamp for my old rifles. That's just me though.
I would very much appreciate it if you could ask your guys what bullet/ball they are using.
Thanks again,
Dave