Howdy
The 30-40 Krag was the first US military cartridge designed specifically for Smokeless powder in 1892. The 30-30 was the first commercial Smokeless round developed for the Model 1894 Winchester. However the complete change over to Smokeless was gradual, ammunition companies continued loading cartridges with Black Powder well into the 1930s.
I have two 1892 Winchesters, one made in 1894, the other made in 1919. I shoot them with Black Powder all the time, in fact I don't put Smokeless through them anymore. Cartridge rifles are different than revolvers regarding shooting with Black Powder. With a revolver, because of the barrel/cylinder gap, fouling gets everywhere. A rifle is basically a pipe. It is a closed system once the bolt is closed. With properly loaded Black Powder ammunition, the fouling should all stay in the bore, very little of it should get into the mechanism. Now granted, 45 Colt is not the best cartridge for Black Powder in a rifle because the thick case does not obdurate well to seal the chamber and some blow back is typical, with some fouling getting into the action. All my lever guns are chambered for 44-40, which owing to its thinner brass seals the chamber beautifully and no fouling blows back into the action. And granted, the Model 1892 is more difficult to take apart and get back together again than the Model 1873. Still, it is not necessary to totally dismantle a rifle after shooting it with Black Powder. All the fouling that has blown back into the action will be easily noticed and can be removed with patches and q-tips along with your favorite water based BP solvent, followed by a good oiling, preferably with Ballistol.