Pre 64 M70, cut extractor relief before or after chambering?

[Clark]

175114

I cut the cone and chamber in the lathe, where it is now, I just finished threads.

I have a curved mill saw for cutting the extractor relief cut. I would do that in the mill.

I hate to take the barrel out of the mill after it is all dialed in.

[M-Tecs]

I prefer to cut the extractor relief last.

[Clark]

Ok, thanks, I will do it that way.

[Clark]

https://www.youtube.com/watch?v=MqLMUTLiXCQ

OK, I did it.

[Tokarev]

Late to the show, but I would not want any irregularities in the barrel bore to interfere with chambering, so chamber first, cut the relief last.

[Clark]

175353
Ready to shoot now.