Ed Franklin's DVD "Metal Working for a Riflesmith" is pretty good. I bought it and have watched it several times. It covers chambering two action types and truing Remingon receivers. I get something more out of it every time I watch it.
I also have Gordy Gritter's video sold by Grizzly and like that one a lot as well.
Gritters and Franklin use radicaly different alignment techniques for chambering, and I'm not intending to start that discussion again, but they are both good video's. So far I use Gordy's alignment method and have had good results. I might have had just as good a results using Franklin's.
Franklin's video covers receiver truing and chambering. Gritter's is chambering only. Franklin talks quite a bit about tooling, Gritters talks more about "why" he does what he does.
My gunsmith friend has Daryl Holland's videos. I've borrowed and watched Holland's video's on bedding (good), reloading (poor), and coyote calling (good). I've not seen a Holland chambering video so can't comment on that. Holland comes across as more arrogant in the video's, and they were clearly done with some input from vendor's - he spends quite a bit of time talking about various products in them. There is also a bunch of AGI stuff to fast forward past.
Franklin's video is twenty five bux including shipping. It ie easy to watch, his explanations are clear, it covers a lot of material, and he talks more about tooling. In my opinion, it is by far the best buy for covering metalsmithing on barrels and actions.
I don't agree with everything in any of them, but in my opinion, Franklin's and Gritter's videos are well worth the money. Holland's, not so much.
Fitch