RWMC,
In answer to your question, go for it as it is a fun revolver.
Early one morning, a huge doe walked under my treestand and was neatly dispached with a behind the ear round ball from my Old Army.
I do not however, encourage this sort of thing unless you are EXTREMELY confident of your shooting ability and most important , your ability to judge the emotional state of your quarry at the time of your shot.
The Old Army is not a fast draw , hip shoot deal at all BUT with the adjustable rear sight. it is a great target revolver and a truly fine hunting companion.
Respectfully, Zeke