I also think that today's machining processes have the ability (and have had for several decades) to make the tubes such that traditional "striking" can be minimized to not much more than polishing them for blueing. The H&H video mentioned "striking" in their, I believe mainly because it has so much lore associated with it, but showed the guy playing with nothing more than about a .001" from the machined tube. It's not like the days when poor machining steels were used and crude machinery was used, then hand worked (struck, for those that have "bonnets" on their cars) to an acceptable dimension and finish.