Locked up cylinder...

[AlaskaBoy]

Okay,

Here it is. I used some of my buddies reloads in my Colt Trooper and they turned out to be black powder loads. After shooting it I put it in its holster and forgot about it for a week. Remembering later that I needed to clean it, I found it to be all white and corroded. Got it all cleaned up and the rust to stop finaly but now the cylinder will not turn and the pin is locked up so I can not remove the cylinder from the frame to clean it. I have used "Break Free clp" to no avail. Any ideas on getting this loose without going to the gunsmith? Paid 185 dollars for this gun 15 years ago and it is in real good shape with just some blueing wear but not sure if I want to spend a couple hundred to get it fixed.

Any ideas?

AlaskaBoy.