Been a long time since I've had that video in the machine but as I recall it was an 1851 Colt (or copy). Olazul, do you recall if the crane area (in front of the cylinder) is rounded or has sharp corners? If sharp corners and octagonal barrel then it's more likely a '51 whereas rounded lines and barrel is more likely an 1860. Maybe I'll pull it out this weekend and watch it again. As stated above, not historically very accurate but nevertheless an entertaining one.
Clint uses 1851 conversions in quite a few of his westerns. He even used a Starr in Unforgiven
. Way to go!!