Doesn't sound abnormal but the choice of distance is a bit unusual.
The VAST majority of shots at deer will be 15-25 yards. You DO NOT want to be 4 inches high at 20 yards.
With modern, fast bows, I sight in dead on at 23 yards. I call it "hot 20". That way, I'm maybe 1" low at 10, 1" high at 20 and maybe 2" low at 30.
Naturally, these numbers vary a bit depending on equipment.
Anyway, this way you have 1 pin to 30 yards and you're never off by more than an inch or so.