FX Suggested pellet size?

[FX User]

I've turned my Dreamline FX Classic to 945 fps with 18.1 grain pellets on high setting and 900 fps on medium setting. I'd love to get advice from others who have tuned their Dreamline, as to ideal pellets for this velocity. Is it better to go up to 25 grain? I haven't tested grouping accuracy yet at 50 and 100 yards

 

[markhooper]

what caliber would help others answer your question.. I don't own any FX
Mark

 

[FX User]

Ah sorry - yes it's 22

 

[HogKiller]

What are you trying to accomplish? More weight means more air, some kinda physics thing. In my Mavericks compact I can go up to 21gr slugs and not have to dink around too much with my settings. Try some AEA pellets, my guns love them.