Scored Main Cap Bearing - Ouch

I actually put a new pump in when I pulled the pan the last time. It was hitting a corner of the Miloden pan and I didnt like it. The other pump was older hi volume. I used a stock pump and gained extra clearance and only lost about 5 pounds. Mtr still holds 40psi hot (180) at idle and 65 on hwy with 10/30. For the repair I bought Comp Cams break in oil for first few hundred miles once I decide on flushing. My oil filter and pump tear down will determine that.

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Judging by the pic of that bearing you have something else going on other than pressure issues.
It appears to be the old chicken or the egg theory, which came first.
Did trash tear up the bearing or did the bearing create the trash?