I'm running Brad Penn 20W-50 Partial Synthetic oil in my 1971 350. My oil pressure gauge (Auto Meter) says 25 psi (at operating temp) and never goes any higher. At idle it goes down to about 10 psi. Never had an issue but it just seem low to me. Any thoughts?

350 sbc
Double Hump Heads
Mild Cam
Edelbrock High-rise Intake
Demon 625 carb
Sanderson Headers
Flow Master Exhaust