Ok here we go with my results.

Firstly the set up.
Patriot Dually set at 60# 28" draw with peep, cats whiskers, Magnock reciever and string loop.
Arrows are Gold Tip 5575 cut at 25.5" 100 gr tips 3 4" duravanes and magnock total arrow weight is 375 grains.

All shooting distances where measured with a tape measure not a range finder because I want to try and get true results.

I shot for about 20 minutes to warm up then placed a business card in the target for an aiming point.
Then I shot a 4 arrow group at 20 yards left the arrow that was in the middle of the card then backed out to 40 yards shot 2 more arrows (while using my 20 yrd pin aimed at the nock of the first arrow) which you can see in the pic 10 inches below the card.
The arrow in the middle was shot at 30 yards still using my 20 yard pin as the aiming pin once again aimed at the nock of the top arrow. The drop is 7" .

Now I have my pins set at 20-25-30 and 40 the gap between my 20-25-30 is about the same and the gap between my 30 and 40 is the same as my 20-25.

The magnocks are a little slower out of the bow but seeing they take out most if not all of the archers paradox they do in fact hold more speed further down range compared to standard nocks.

I have done speed tests in tha past between the magnocks and conventional nocks at different ranges right up till I had a perfect heart double lung shot on my crono.

Now not knowing your buddy' s draw lenght his results might differ from mine but not to the effect that he is claiming.

This is also another example of why I dissagree with the claims some guys have of using 1 pin from zero to 30 yards.

Anyway here is the promised pic.