No info on the gun's history yet.
Took it to the range yesterday with a box of UMC 125gr JSP.
Action on it is incredible (after I cleaned all the crud out of it). Since I was wearing muffs and it was daytime, I can't really comment on flash and roar. Kick was no worse than .38 Special +P in a lightweight snubbie. Probably due to the sheer mass involved; this gun is one chunky handful.
Accuracy-wise, hooboy. 1" wide bottlenecks at 25 yards were reduced back to sand. Water-filled 2-liter bottles at 100' exploded nicely.
I think I'm in love. Or lust. Or something.