For those wanting .22 (and .177 for that matter) I have Excel charts for both calibres ... not sure where they came from but my file is dated 2013. I did laminate copies and find them very useful.
If you want copy/copies just let me know by PM. I apologise in advance to Neil because I could not open his download photobucket file so do not know if my files are the same or not . Pellet weight vs velocity for range of weights and ft.sec giving ftlb.
Cheers, Phil