I’ve found my best tune with 2 different ammo weights

Here’s the setup 600mm stx 1:24
Huma regulators
25g FX 22cal
140/ 1st/
125/2nd
16/Macro
4.5/Micro=
930fps
50yd grouping (4.2mm) CTC
Only adjusting the HS to #5 and using fx atomic 16g I get the same exact speeds and holds as the 25g fx pellets without changing any other settings!
I haven’t shot any groups further but have consistently taken birds at 83yds one shot one kills using holdover’s per Chairgun elite