I'd slug the bore of the knight first and see what molds out there will work. My Omega with the way i am able to measure shows it as .502" which is good, most out there are tight bores.

I havent even considered a conical mold due to the lead it would eat up and i just dont have access to that kind of lead. I also haven't seen knights shooting off the shelf conicals. Its always bullshop or no excuse conicals.