Sheriff Pat Garrett used one of those with a 7.5 inch barrel to kill Billy the Kid. Can't be too bad a caliber choice.
Interestingly, when Sir Henry Rider Haggard published "King Solomon's Mines" in 1883, he equipped his characters with Colt SA revolvers "in the heavier caliber", meaning .45 Colt.
He was a veteran of the Second Zulu War of 1879. Maybe he felt the 250 grain .45 bullet would pierce a Zulu shield better and get in deeper if you shot a lion with a handgun.
Are there any good factory loads today in .44-40? In black powder days, I gather that it rivaled the .45 for velocity, but with a shorter bullet, 50 grains lighter.
That's a nice gun. I fired one like it in .45 Colt. It needed a trigger job, but was otherwise a nice gun.
Those things point so well that it's almost hard not to get killing hits on silhouette targets at 15 yards.
The only thing betwen me and a gun like that is money...Congratulations on getting one.