Nice … I have yet to shoot a fireball. I own a few different .17s (both rim & center) but not a fireball(yet)
Thats a myth … they still see the “light” … The red filter makes it so it dosn’t strain there eyes and spook them. A lot of guys use green or yellow filters in areas that are hunted heavily (they WILL get used to the fact that a “bang” comes with the red light) … Just like most relay a car with white light.
If its pretty red thats good … most of the filters I have seen for handheld spotlights are pinkish, cast horrible halos of white light, and are a PITA.