I certainly understand your position, I was once a traditional bow hunt only guy but the freezer came up empty at times. In archery have been strictly a selfbow guy since 96 although I do like my flintlocks.
I have found that the majority of the B/P Buckskinners are selfbow guys as well at one level or another. A lot of selfbow guys dabble in traditional B/P firearms also so the two can coexist.
I am with you about bought off the shelf cap lock B/P rifles, there is nothing primitive about them.
In my case I build all my rifles and fowlers, all flintlocks, in the B/P world they are definitely primitive. I have spent up to two years on a build starting with a block of wood, a barrel, lock and pile of rough castings from a foundry.
I pretty much carry the M/L section here with build a-longs, Mike Yancy has added some good input as well. In my old age I am more into the crafting part than the shooting part but I do hunt with what I build be it selfbows or flintlocks.
Check this out and see if this looks Hi-tech to you. I just checked the thread and found that half the pictures of the build have disappeared, I didn't us photo bucket so I don't know where they went.
http://www.primitivearcher.com/smf/index.php/topic,55087.15.htmlThe finished picture are gone form the initial post, here is one.