Cam bearing issue

Bewy said

I removed the cam brgs from a 440 I am building. Looks like the brgs were installed by a previous owner, but the engine was never run. Two cams tested were tight. After removing the brgs, #3 is tight on the cam, but nothing obvious on the brg as to the cause.

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So most likely that bore is a little tight or out of shape, line, etc. Just needs a little love next time before final assembly. Personally, I would try to ream by cutting an old cam to see if that cleans it up. Then you have a plan once the bearings are changed. I wouldn't mess with the bores unless it's really off line.