Re: Which charging die for 7RUM (load master w/auto-disk)?
My auto-disk (pro) setup already allows for stacking of the disks without any sort of "conversion" required. But even if there WAS a problem with powder measurement, there is always the "adjustable powder charge bar" option for the auto-disk setup (it's only 10 bills), if I were to need it. I'm sure it's been designed to be compatible with the disks, in terms of stackability. This would allow for a pretty much infinite # of different (and very precise) charges to be measured out. The issue I currently seem to be having involves the dropping of the charge into the cases, after it has been measured. And since the powder I will be using is of the stick variety, I would REALLY like to have the proper die, along with the integral (but separate piece) drop-tube that goes with/inside of the die, to minimize the possibility of any powder getting hung up, and ending up being added to what is already going into the NEXT case. Obviously, the top of the die needs to be threaded on the inside to match the bottom (outside) threads of the thumbwheel on the auto-disk powder measure. I suppose that a die that does NOT use a separate drop-tube inside of it would still work, if that's the only kind that IS available for the 7RUM cartridge. But it does need to be able to funnel the powder down into the neck of the case, without the possibility of any getting hung up. The load master is not only THE only press that I have, but it is also the only one that I ever WANT to have! When I bought it (only a few years ago), it was with the intent that I would be using it for ANY rounds that I might want to load (short of .50BMG, anyways), so that I would never have to consider buying any more presses. I do have to agree, that due to it having to perform so many different operations with a single stroke of the ram, it does take some fiddling & tweaking to get it set it up for smooth, seamless operation. But so far for me, that has not been a problem. For safety reasons, I actually WOULD be looking for problems, with the most critical being those of the overcharged case variety. There is a commercially available die known as the "powder cop" (a hornady product) that is intended for the sole purpose of allowing for visual verification of the amount of charge in every case, by means of having a floating rod drop down into the charged case when the ram is brought all of the way up to the top of the stroke. Obviously, it needs to be placed between the powder charging die and the bullet seating die. The load master can accommodate this extra (4th) die, while STILL having the capacity for one more! But I am still not willing to put ALL of my faith in that alone. After I finish loading up a batch of cartridges, I ALWAYS perform a final weight check of EVERY round that was loaded. Any round that varies from the average by more than a certain amount (as determined by me, taking variations in brass weight into account), ESPECIALLY if the variation is on the over-weight side, gets pulled apart, and the powder charge that was in it is weighed.