Re: which reloading press?
"...20 or so shells at a time that much easier? I usually load a few then change calibers and load a few more."
Sounds like you load like me. I've been doing it since '65, started with a (Lyman) six hole turret because it would "obviously" be faster, right? Wrong. I finally set it aside and have used single stage presses for all my rifle work over the last 25+ years.
Why? Two reasons.
One, precision is lessened. There is NO way a turret can be indexed laterally as accurately from hole-to-hole as a fixed single stage is. And the turret HAS to have at least a little bit of slop, or spring in the mechanism, or the turret couldn't turn, right? Die hole-to-ram misalignment and/or turret spring is no help for precision work.
Two, loading speed is really no better. Swapping dies in a turret takes the same amount of time for two to four at once or one at a time on a single stage. Swapping those massive turret heads in a T-7 press seems impractical, and VERY expensive, to me.
Today, I only use my old turret for hand gun stuff and that just for nostalgia's sake. It's an old friend but it's no faster, so,...???
For the cartridges you list you will find no lack of capacity or quality with any of the single stage Reddings.
I have a Rock Chucker II but wouldn't buy it again, especially since their body castings are now made in China. Why should I pay their elivated price so RCBS can have a greater profit margin and lose US jobs in the process? Redding's are made in the USA!
Forster's Coax is a great press (as are their excellant dies) but with a significant user handicap; the lever comes straight out and that limits freedom of movement at the press more than I like. Also, I prefer to use a mix of special purpose dies, in mixed brands, so getting a bunch of Forster lock rings for all those I use would amount to more money than the "quick change" die system is worth to me.
A Harrel's press would be great I guess ... if I was a deadly serious competion shooter who could afford a batch of those expensive turret heads set up for all my cartidges, ready to go. I'm neither. But I think I can precision reload just as well on MUCH less expensive presses!