Howdy Again
I see this thread has been revived since I last posted to it.
I only own two revolvers that are chambered for 44-40.
This is a Merwin Hulbert Pocket Army, manufactured sometime between 1881 and 1883. This one I only shoot with Black Powder.
My other 44-40 revolver is this Colt New Service, made in 1907.
However I have lots of lever rifles chambered for 44-40, five of them at last count. The only cartridge I load more of then 44-40 is 45 Colt.