That's weird... Illinoisbow, I too have the Camelback pendulum and really like it. I got mine set dead on at 20 yards flat ground, andhavealso shotitwhile standing up on my back porch roof! The pendulum worked fine and I was dead on accurate at 5 yards (like they say to test from). So I shot it from 20 yards away from up on my porch roof and was pretty accurate (seemed just an eyelash low, but nothing out of the ordinary).

Here's something that will really bake your noodle with the pendulum sight:

- Flat ground 5 yards, 10 yards, 20 yards, pendulum locked in: Dead on accurate.
- 5 yards 15' up on porch roof, pendulum opened: Dead on accurate
- 20 yards again up on porch roof, pendulum opened: Accurate, to maybe 1/2" low... maybe...

{but get this}
20 yards again up on porch roof, pendulum locked in: Dead on accurate!
5 yards up on porch roof, pendulum locked in: Still dead on accurate!

Perhaps I am bending from the waist and using the single pin properly and somehow am dead on accurate at 20 yards with it locked in. I don't know... It's very strange.... [:-]