Turns out that they don't have any data for the 5.7 which isn't publicly available. They have the same data which Hodgdon lists, covering #5, #7, and True Blue, and they have the data from the Brian Pearce data set which covers a lot more powders (#5, #7, #9, True Blue, W-N105, Power Pistol, Universal) and one or two more bullets. It's publicly available and Mr. Pearce says that he had the loads pressure tested and has start and max load, COAL, etc. But it's all publicly available and I've downloaded the PDF for his article and Hodgdon has their data online.
For load data which isn't publicly available, I should have bought the Lyman Reloading Manual. Starting at 49th edition, they list data for the 5.7. It includes data for N340, 800X, HS-7, Blue Dot, and I'm not sure what else. I've stumbled across a couple of instances where someone took a pic or video of their Lyman book so I can see some of the load data so I could build loads for those, but I don't think it's the whole section. I should have spent the $30 on Lyman 51, or at least a used Lyman 50.
I guess it doesn't matter anyway because I've decided to use #7 and bought a pound of that from the LGS. There's plenty of load data available for that and I have a good place to start.
Dadgum!, but gearing up to load for 5.7 is turning out to be expensive.
New powder (#7) $40
different (Maker) bullets $50
Hornady dies $70
Lee Case Length Gauge & Shell Holder (because I already have the cutting stud system) $12
Sheridan case gauge $46
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$218
Of course, if I can get a load that closely replicates the performance of the Speer Gold Dot ammo, that will pay for itself in about 3 boxes of ammo.
And I also bought 250 once fired cases for an extra $50+shipping.
Fortunately, I already have small pistol primers.
Peace favor your sword,
Kirk