I don't know that Ken was involved with the Wickliffe project at all,,but as far as I know what became the CPA/Shuttleworth rifle was originally a project of Ken Bresien.
Ken was investment casting, or probably having investment casts made,, of many parts even late in his working career.
I have a couple of the less than acceptable 'culls' of M/L trigger guard and butt plate castings. They are marked with small red pencil areas to note what was not acceptable to him on them.
Also what I think is a trigger guard master used to make the wax models used in the investment cast process for them.
As far back as the late 70's, maybe very early 80's I recall single shot collector Leo Cook mentioning the 44 1/2 action that was in the works with Bresien's and Paul Shuttleworth's names in the conversation along with Jim Hall.
Jim Hall was making the Walker Hepburn underlever conversions on original Hepburn actions.
Leo was a well known Sgl/Shot collector. A great number of his rifles were in Grants books on the subject.
I didn't really know what it was all about back then. I was doing some restoration type engraving for those guys on some Single/Shot projects. I was still learning a Model 44 from a 44 1/2!
Ken was the go-to guy in the muzzle loader target arena for a bbl. His specialty was slug guns but most any precision M/L target rifle was his thing. An excellent all around gunsmith as well.
I still have the Win73 be rebored to 44cal for me from a worn out 38-40.
I remember that I traded the work I did relettering a Sharps bbl for him for the rebore.
That's kind of how a lot of things got done then.