Welp, not claiming any "expert" status, my experience with drilling into brass frames/ trigger guards I would say the old brass is definitely more brittle ( which typically translates to harder) than any of the new stuff!! The Colt 2nd Gens and older ASM's seem to be much harder to drill than anything since 2000.
Personally, Blackie strikes me as "I'm so smart I can figure it out myself" and will actually tell you in a video exactly what Colt (or "they") had in mind by doing this that or the other . . . as if he was "there" listening or explaining to "them" why they should do "this, that or the other" . . . Most of what he gets "right" is what you would pick up from a Kuhnhausen book but the rest makes me giggle sometimes.
Mr. Beliveau seems to be more into the operation of the revolvers and obviously the historical side of each variation of each model which is fine but he also seems to have an "air" of "I'm THE last word" and this is how it is . . .
That said, both are tolerable to listen to and one can learn things ( camping with tweezers from Blackie and history from Mike). When it comes to setting up cap guns though, neither offer much more than "band aid " "fixes", never a mention of the importance of arbor length ( which is actually THE most important aspect of the open-top platform) which alludes to their actual " overall" knowledge of the revolvers . . . which definitely sways may perception of their videos. All the years of being on forums that Mike is also a member of, he's never offered to do a review of any of my or other members offerings ( that I've seen) to compare vs " out of the box" factory offerings but hey, if you think they can't be improved on then why would you? On the other hand, I haven't asked either but my work is actually working on the revolvers in question rather than the revolvers being video material. I guess we both have plenty . . .
As far as the brass revolvers themselves, the open-top platform with a close tolerance setup ( with correct build) can be used just as its steel sibling . . . The Remington on the other hand is the "animal" it is. If you happen to get one with no perceived endshake, you are probably fine with the same treatment as with a steel version. The more endshake, the lighter the loads need to be.
Just as with cartridge guns, endshake is the detriment of the arm itself (other than a reloading incident!!!).
So, tighten them brassers up and have at it!!!
Mike