** Edit:  It's been a couple years since I've assembled an FE engine and can't remember how I oriented the bearing oil holes in the past.  It appears this time that the culprit was the oil hole facing upward away from the load on the camshaft by the lifters, but perhaps there is another problem I'm not seeing?  Thanks for your input!  Build details are below:**

1972 391 block w/ Precision Oil Pump distributor bushing, .030 over forged pistons, 3.78 stroke, C7 rods w/ ARP bolts, Mellings HV pump, homemade laterally flared semi-deep front sump pan, D2 heads w/ home port job and CJ SS valves w/ teflon seals, Comp 294S K-kit, factory adjustables w/ Crane adjusters and Doug's Precision Oil Pump end stands

Engine destination is a 66 Galaxie 500XL w/ HEH-CC toploader and 3.70 trac-lock 9" for street/strip

Started the engine with only a slight amount of drama on my awesome home-built test stand.  Cam break-in seemed to go rather well despite one shut-down to rig up a fan for more cooling air flow.  Oil pressure held steady at approx 75 psi at speed (1800ish RPM) dropping to around 40 at idle hot.  Comp Cams break-in oil was used as well as Comp's cam and lifter installation lube on all the cam lobes, lifters and distributor gear.

After shutting the engine down I cut the oil filter open and to my horror I found fine metal shavings... a lot of them.  The engine probably had 1 hour of run time with only the outer valve springs and dampers installed.  Upon disassembly, I fear I have made a critical error.  See the picture below.  Have I installed the cam bearings up side down?!!

Of course I'm ordering new bearings as the old bearings are toast.  Should I just replace, clean and reassemble?  Could upside down bearings really do this?  What would you do?