71 hemi orange swinger rescue.

I would say valves sticking.
Pull the rocker arms, squirt some ATF on the valve guides, let it sit a couple of days, give the top of each valve a good strong tap with a brass hammer.
Then put the rocker arms back on, add a squirt of oil to the cylinders and try the compression test again.

Or the timing chain jumped, may want to check it first, since you have a bore scope, pop the fuel pump out and see if there is any broken teeth on the cam gear.