Foxy;
In 1894 Winchester introduced their model 1894 chambered in .38-55 & .32-40, both old Ballard black powder rounds. Their action was strong enough for Smokeless but their barrel steel was too soft. By 1895 they had acquired suitable Nickel Steel barrels & introduced first the. .30 WCF & later in the year the .25-35, both as Smokeless Powder rounds. The .30 WCF was I believe the First Smokeless Power rifle introduced as a Sporting Rifle. As a Military rifle, the .30-40 Krag had preceded it. Worldwide as I recall the very First rifle to be introduced using Smokeless was the French 8mm Lebel.

I once saw an episode of Gunsmoke which showed a calendar dated in the 1870s & Festus pulled a Winchester from his saddle scabbard which was either an 1892 or 1894.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra