Here are a couple of links to older load data manuals. BTW: the 1947 PB Sharp is on page 400. Some of the powders are still available. All in the Lyman manual are still available.
complete_guide_to_handloading - sharpe - 1937.pdf
In general, I would suggest the slowest powders that will perform well will be in the 4198 and 5744 burn rate. Also, staying in the original bullet weight 180-200 gr range will improve performance.
Yeap, from 1903 to 1945...nearly 45 years of stupid people? I think not.....but there are always idiots out there. This is true with everything and is why we still have WARNING labels on products.Winchester had a smokeless load for the 92 that was close to 1700 fps. Was not for the 73 and marked 92 on the box. At that time they assumed people were intelligent enough to understand what they were buying. People were not. Guess those loads were hard on pistols. I have an old Lyman manual that lists some pretty fierce loads for the 44-40, but newer manuals quit that. Kind of like the hot loads for a 45 Colt. Might get used in something not made not handle them. Still, in a rifle made to handle them, they might have some use. Then again, when shooting a classic rifle, the experience is better using original ammo specs.
The 44-40 was originally intended for black powder. That's one reason that the case capacity is generous. It's the old, "just because you can doesn't mean you should".
Let's just say that I have a great desire and appreciation for actions and components to hold together as the designers intended.
Good luck. Stay safe.
Yeap, pay close attention to the language. short vs Short....they were called 45 Colt Government, not 45 Short ColtsThere were 45 short Colts. It was a military designation. They had Scofield's as well as Colts and had a cartridge that would work in both, the short Colt. Read that comment more than once. Don't know if the "short Colt" was ever civilian.
Most folks probably knew which ammo to buy but it only takes a few to cause issues. The stupidity was not universal. Most of those products died off before WWII as at that period war supply was critical.