great choice of fac air, rapids are well priced. if you find you have a bellow average barrel like I did on my fac rapid you can just swap it out easy.
personally i enjoy running my fac .22 air at 950 fps with jsb 15.8.
shoot a tree rat at 75 yards with medium weight fast pellets with good shot placement and its going down! My theory is the heavier tougher pellets tend to deform less on impact. At 200 yards the medium weight pellets are not doing much so increase safety.
There are things you cannot do with .22lr or sub 12ftlb air that you can do with fac air. fac air fills a sma