Hi folks, my stepfather's dad passed away two days ago, and my mother and him inherited this firearm. I'm about three hours away, so I have not had the chance to inspect it. I'm familiar with typical revolvers and the thumb release to open the wheel, but this one looks a tad different. Is the release in the same spot as a normal revolver, or is there a different method to unloading this old firearm? Thanks to anyone who is familiar with this particular gun!