I just checked that one. I usually use a different one that illustrates flight above and below line of sight, not straight out and " drop off a cliff" like Jackson' s.

Here' s what I got-

Yards 350grn@288 500grn@252 500grn@275
10 -2 -3 -3
20 -9 -12 -10
30 -21 -26 -22


500 grain at 275 is scary close to the 350 grain at hunting distances... Wow.