Interesting historical video. However, the revolver depicted by shooter in video isn't an 1847 Colt .44 Walker. It's actually a Model 1860 Colt .44 percussion revolver, probably a replica.
A reenactor pard of mine has a replica Walker, I own a replica 3rd mdl Colt Dragoon that is basicaly a Walker w/ an approx 4" shorter barrel & loading lever latch (& weighs about the same). Hefty pieces of iron & they are fun to shoot!
wow,wish i had a pair of these babys.for history,alone.