Winchester built their 1873 lever action, which was another toggle action, black powder era rifle, from 1873 until 1923. Lugers are also toggle action and the 9mm Parabellum cartridge operates at much higher pressures than the .44-40.
As noted above, Uberti proofs their cartridge guns with smokeless powder. Any safe handload, suitable for the older actions (NOT the Winchester 1892 and it's clones, nor the Marlins) will be fine in a Uberti.
Gil Davis Tercenio
# 3020V
34th Battalion, Virginia Cavalry
Great, great grandson of Cpl Elijah S Davis, Co I, 6th Alabama Inf CSA
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