Which charging die for 7RUM (load master w/auto-disk)?
With my 7RUM due to arrive soon, I have decided to get the first rounds that will be shot through it loaded up. I picked up an RCBS carbide 2-die set, and the first 50 (new) brass cases are now sized, expanded, trimmed, chamfered, tumbled, and polished. I'm now setting up the load master press for priming, powder charging, and seating of the bullets (they will be re-sized & expanded as well). The powder measure that I have is a (chain-driven) auto-disk pro.
But there is an issue that is holding me up. What charging die am I supposed to use for charging the 7RUM cases with the auto-disk? The Lee "universal charging die" says it is for the "perfect" powder measure, not the auto-disk. And the Lee "auto-disk rifle powder charging die" says it only handles cases up to 2.015", and 7RUM cases are 2.850". That is basically putting me between a rock and a hard place, as I am unable to come up with anything else, so far.
Can someone please help me out with what charging die I am supposed to use for this particular application? (I'm not finding a 7RUM "powder through" die, either)