The only two powders I used in my .45-70 when I had it were H4198 and Vhit N133. I used both powders with two weights of lead bullet. A Howitzer 405grn FP bullet and a 350grn FN Gas Check bullet, which I think I may have bought from the range office at Bisley.
With the 405grn I settled on 40grn of Vhit N133, and it gave me 1396 fps. Sd of 14fps.
38grn of H4198 gave 1526 fps with the same bullet, and an Sd of 11 fps.

Figures for the 350grn bullet were:- a bit of a mixed bag. I didn't record the results with H4198 (can't remember why). The Vhit gave me 1564 fps with 44grn, but the load showed an SD of 61 fps!
45grns was better, yielding 1533 fps with an SD of just 26.
I found the Vhit powder gave much sharper recoil than H4198.
Both powderswere much more consistent with the 405grn bullet.