Thanks Spawn.
That implies rifle ammo loading and the desire for tighter tolerances in all aspects to enhance the ability to group tightly at longer distances. To me that says "weigh ever charge and trickle up to weight". And that says that it's time for me to use my nice solid single cast loop frame single stage press.
I prefer a single stage over something like the Lee turret press because I can expect the dies to be held to a tighter tolerance to being axial with the ram travel. With the Lee turret I don't like the rather spindly support of the rods used or the possible misalignment of the die plate in the tower ring.
In general I find that the indexing turret style press is neither beast nor fowl. It requires more work than a progressive to load lots of ammo. But at the same time there's too much room for play, flex and misaignment of all sorts for me to trust it for loading good rifle ammo as compared to a nice solid closed loop cast frame single stage.
The use of breechlock bushings in the case of a Lee breech lock single stage or the bayonet fittings on a Hornady Lock n' Load single stage makes changing the dies easy and ensured repeatable settings. So I'd go for one or the other over the Lee turret.
For the same reason if you go with the turret or opt for a single stage I would not trust the auto disc to measure out proper amounts of rifle powder. They work great for handgun loading. But there's too much room for variation to consider for loading serious accuracy rifle rounds. And if you buy a proper progressive then they come with a matching powder measure.
So I'd suggest you go one way or the other instead of the "not great for either option" middle ground turret press. Eventually get both and be happy at whichever loading you're doing.
I'm not just making this up because I don't like Lee. I've owned and dealt with the rod supported Lee presses and found all these issues and more in them. As a result I'm not a big Lee fan but I understand that for many it's Lee or nothing. And truth be told once you work out any little bugs you find they are just fine. But I've also used enough Lee and other presses that I don't like the middle ground indexing Lee turret presses for all these reasons mentioned. Which is why I say go hard core SOLID single stage or make that leap of faith and go full progressive right off the bat.
Which suggests the Lee 1000 progressive. I'd suggest you jump in a bit deeper and at least get the Load Master if you have to go with Lee. It gives you more options for die stations over the minimalist three holes on the 1000. For good reasons most folks seat then crimp in separate operations. This is especially valuable in the case of cast lead bullets. The three positions on the Pro 1000 progressive does not give you this option. For this reason alone it's worth side stepping this model and moving up to something with more die positions such as the Loadmaster or some other brand with a minimum of 4 die stations in the die plate.
