Re: I have competed up against this girl.
yeah those were the early models, on a blackhawk frame.
the new new models ( serial number prefix of 510 ) are on a smaller and lighter frame.
and the timing is different to, with the load gate open the cylinders align to the ejection rod and cut out.
and with the free spin prawl or plunger removed the wheel can spin freely in either direction, alot better or loading or unloading . and if you get a proud primer for any reason , your able to rotate the wheel to free up the gun alot easier.
Dave in Phoenix