You'd be surprised how gentle the airplane is. It has a rather large frontal area and low wing loading which makes it a slow airplane.
I know it looks like a jet but it doesn't fly like one. If you'd put that .40 on a patriot you would get a lot of speed. On the F-15 you'll get a lot of noise.
Actually I quite like the F-15. I think it's a neat kit but it's too slow for me