Hi all, my son and I did a few tests and had some mixed results and need some pointers / help / gatskop or whatever it takes.
The history goes like this:
My son has a CZ200 S (4.5mm) and I have a Air Arms S400 (5,5mm FAC).
*I forgot to add - The 4,5mm pellets JSB Exact 8,44gr and 5,5mm JSB Exact Jumbo 15,89gr.
We zeroed the rifles at 25m, both are shot off a steady aim and it is outside on a farm.
The groupings after the zero is a rugged one pellet size hole for both rifles.
Now then, we shoot quite a lot doing some PC but it felt that we did something wrong as when we took longer shots (on paper targets) the impact seemed to move to the left of the target the further we did the test. Obviously the point of impact was lower on the target if aiming on the "kill zone" of the target due to the trajectory of the pellet, which is understandable but why did the pellets hit to the left on 40m, 50m and 60m? See attached photo of 50m
What impact does the levelness of the site have on zeroing / sighting in?
Which other factors may have an influence on the whole story?
Thanks we'll appreciate some help.
Hannes and Johann