Have to say, things went very well, right from the start. Once I got the scope roughed in on paper, I began to fine tune the adjustments using small one inch orange dots as the aiming point. In the target below, this would be the target on the left at just under half an inch. After some clicks in windage to pull the group into the orange, I then knuckled down using my best spring piston technique to push this rifle to the max for accuracy. This would be the target on the right. Yes, that is a five shot group under a third of an inch and I measured it conservatively.
I probably should have ended the session right then and there. My hands were getting cold, anyway, with the late afternoon chill in the lower 20s. I continued on, however, and, sorry to report, groups started to open up. Could not repeat those sub half inch groups, despite my best efforts. Finally, when I started dropping pellets due to cold fingers I called it quits.
That's when I got a very graphic and visual explanation for the ever expanding groups. As I picked up the rifle to carry back into the house, the scope with rail actually slid backward off of the rifle. An inch to go and the scope with rail would have taken a tumble on the hard frozen ground. I had read that the FWB Sport with its sharp and very quick recoil made securing a scope a challenge and now I was seeing it. Back to the house to redo the mounts with plenty of loc-tite.
Still, short as this session was, I learned that FWB as a maker of fine air guns certainly deserves its reputation as being in the very top tier in the accuracy game. This spring piston air rifle really does give my best PCP air rifle a run for the money in potential accuracy. Will return to the range, soon, for another accuracy test, but this time, hopefully, with a scope that won't work loose.
Does the rail not have slots for a hard stop pin?