My Steyr Pro X is a difficult gun not to like...Shot a few groups today at 30 and 45 yards using JSB 18s. This platform isn't one to make big HSA adjustments at least mine doesn't like big adjustments...too much or too little and the mag will jam...but my guns sweet spot happens to be 874 fps...right where I wanted it anyway...shooting off the attached bipod and bag in the rear on my plastic bench dime size groups at 30 and sub quarter at 45 y were easy...trigger isn't capable of much better but good enough. This gun can sure go through a bunch of pellets and I didn't keep track of the shot count but must be around 70+.Dosn't like Crosman domes at all...So 874 fps 30+ fpe dime at 30 quarter or better at 45 without cocking...(has better in it with better bench) interesting fun gun!