Mike,

Great comment about smoking the case. That is what I normally do, using the blue machinest dye.

The problem with a modern reamer is that the rifle is bored for a 0.358" bullet and non-custom reamers are machined for a 0.366" bullet.

I believe that 9.3x72 brass can be trimmed to 70mm and then reformed to fit. reloading should not be aproblem with 9.3x72 dies. I say that only because I have a 9.0x70 that I reload with 9.3x72 dies using .359" cast bullets.