The entire series is very good. In particular 7,8,9 are relly interesting - they tell a story that I find excellent. I prefer these to your "signature portrait and post processing" style. The changes to your art are quite fascinating.
Beautiful shots. It would have been cool pic too with a derringer & garter. Nice to see pics like this too where the model doesn't have her finger on the trigger even though it is a SA.
How about a tiny wisp of smoke from the end of that SA (Ruger Blackhawk?)?
And a tiny nitpick - she is certainly holding the revolver correctly, with her finger away from the trigger, but folks in the period depicted likely didn't concern themselves with safety like we do today.
I snuck one more in to the OP. 
