What a journey this has been. In adjusting the headspace, I found that the face of the chamber was out of square .006 and the extractor relief cut was about .060 too deep. Also the barrel was turned in a bit too far.
I removed the barrel which appeared to be retained with some kind of thread compound, and cut the shoulder back by one thread ( about .050 ) and reset the headspace. That solves the extractor cut and breechface issues but the chamber is .050 short.
Now that the barrel is square to the receiver, I am going to refit and bed the forend flush with the nose cap and receiver. And while I am at it, I might as well bed the buttstock.
I think I will just tweak my handloads and dies to fit instead of buying a chambering reamer. After being a tool and diemaker for over 40 years, I am a bit OCD on details.
I just hope all of this can be of some help to those of you that have a "Sick" Chapparel rifle.
Stay Tuned, GeezerD