non FAC, go for a .177.
but I see nice grouping of a .22 JSB 16 grains @ 100 meters , 30 ft/lbs.
and the .25 JSB @ 900 ft/sec 40+ ft/lbs.
Take a lot of care, for the wind, and the canting of the rifle.
Shooting an air rifle at 100 meters, is like shooting the real stuff at 700 meters.
cheers, ewoodie.