I just picked up a black wrangler yesterday and put about 400 rounds through it today. Overall, I love it, but there's things I want to change about it also. My cylinder moves forward slightly on the base pin, both cocked and uncocked. Not much, but it moves. It is very accurate at 5 and 10 yards. At 25 (the back wall at my local indoor range), groups opened up considerably, like 8-10". I was getting frustrated enough that I had to pull out my 45 and shoot the bullseye just to make sure it wasn't me. The 1911 hit just fine.
I saw that Power Custom has a bisley half cock hammer and trigger set for about the cost of my wrangler. That and some hogue ivory micarta grips for $100 more and a kieth style base pin would bring it up to around the $600 mark which seems silly when I could buy something else. However, I'd like to make custom revolvers one day and this could be a start. The hammer is for the xr3-red frame single six so I hope it works. I wonder about the half cock being an issue but if I install the corresponding trigger I don't think it would be a problem. Is it going to affect the cylinder spinning?
It seemed to shoot better after about 200 rounds but all of the brass had to be extracted with the rod. I was using federal and CCI minimag ammo.