Hey Daryl:
I think you are under-selling the Paradox guns some.

Early guns did indeed do sterling work at ~1000 fps as you point out, but the ballistics were improved somewhat when nitro loads became standard, and it wasn't long before Hollands brought out a 'Magnum' nitro paradox with substantially increased velocity.

Also, the WR Explorer was followed by a 'magnum' version, and then by a 'super-magnum' version, although there is some doubt as to whether the advantages of the latter were real due to a slight decrease in bullet weight apparently.

Nevertheless, to assume all Paradox projectiles ambled along at 900 to 1000 fps MV is selling them short IMHO.

That powder might have been Scheutzen, sounds familiar. I'll try to find the articles.
Also, the ones I remember dealt with BPEs like .450s or .500s, not bore guns.
Damn! I'll have to find them now....!