My 1896 Winchester Ammunition
Catalog says under "smokeless cartridges"....does not list powder type..only grains...:
25-20----8.5 gns
30 win metal patched----30 gns
30 u.s.----40 gns
32-40----17 gns
38-55----19 gns
38-56 win----25 gns
40-65 win----27 gns
And about twenty others, all under smokeless powder...it also gives bullet weights for each...
Hope this helps....
According to what I am seeing in this old catalog and others, Winchester used 30 grains in the 30-30 AKA 30 WCF..so continued on with the BP mentality..i.e., bullet size-powder charge..AT FIRST anyway....30-40 U.S.....same thing...it just happened to fit............BUT then they had trouble because somebody loaded 70 grains of smokeless in a 45-70......probably a trap-door as well...?
