I know this has been hashed a bunch and we all know the brand that gets chastised the most for it. I am looking for everyone’s input. Now I can see if the poi starts moving around during your shooting session and the wind hasn’t changed that’s a problem. But from day to day or whatever time frame you pick is it that uncommon ? I watch a particular PB channel on YouTube that puts out a video every single day. He has and does a lot of gun reviews. I’ve seen numerous times where he takes a PB rifle out that was perfectly zeroed at some point prior as I’ve seen it used in prior shooting or hunting vids. In subsequent videos it’s the exact same setup. They almost always require a slight re zero, never being the exact same from previous use 🤷‍♂️
 
I believe it is an issue and not just with FX. I have seen people report other makers guns doing the same, just not near as often as FX.
I own several of the most offensive FX guns and it is not an issue for me. My Maverick and neither of my M3’s have suffered the malady unless dropped or some other form of impact has occured and it has to have been significant. It has only happened a few times and both were due to Impacts on the gun.
I had an interesting thing happen this year shooting an indoor league. I thought I was fighting my Maverick 600mm 22. The gun is very accurate but would be shooting 10 rings regularly when I did my part and then would shift low and left. The low and left shots were consistent and overlap the targets presented very good groups. This went on for several weeks until I noticed the gauge for the bottle was reading higher than the tank gauge while filling. Further study showed the bottle gauge was reading 45-50 bar higher than the fill tank gauge. I can usually get 3 full 18 round magazines
+ 6-7 more shots shooting 25.39 pellets. The league is a 30 target course with unlimited sighters. I run the gun with the second reg @ around 135 bar. With the bottle gauge only filling to 195-200 bar I was falling off the reg when I thought I had plenty of air.
Is this the cause of all suspected POI shifts? I doubt it very seriously. However, it is one of many things that can cause a gun to suffer POI shift.
I believe also that the popularity of high magnification FFP scopes with parallax adjustment are another cause because I do not think to many people know how or go through the trouble of making sure their parallax adjustment is as good as it possibly can be. These scopes are particularly fussy at their higher magnifications and at very close range. I will confess that Both the Impact and the Maverick cheek rests are miserable and need an after market riser for them to work for me. Change your cheek weld and you have POI shift.
I agree it happens but I also believe there are more instances where there is a practical and preventable cause.
 
I like to brag about my DreamTac's lack of POI shift. Last weekend, the cattle dog knocked it off the rickety "table". It hit the bench a couple of times on the way down before settling mostly under the table with the butt in the lawn and the barrel against a brace, holding the weight of the gun off the ground. I picked it up and took a shot and found it hitting about 2" left and 1" low at 20 yards. Yikes! I popped the scope off the rail and put it back on in the same position. Took another shot and couldn't tell anything had happened. This weekend's shooting tells me that tumble didn't hurt the gun at all.
 
En mi caso, sufro de cambios de punto de interés. Uso mis armas exclusivamente en un campo de tiro. Este campo está a nivel del mar. Disparo con potencia europea, de 16 a 24 julios, y prácticamente solo disparo con BR a 25 metros.Mis sesiones de tiro casi siempre empiezan temprano, sobre las 8:00 a. m. La temperatura es relativamente fresca, hay mucha humedad y el aire es muy denso. Mis primeros disparos son bajos y compenso con la mira. A medida que sube la temperatura, compenso menos hasta alcanzar el punto óptimo.Bueno, le echo la culpa a las temperaturas. Puede que me equivoque. La verdad es que he aprendido a vivir con ello y no toco la mira telescópica porque sé que se reiniciará sola. Los rifles, un Steyr Challenge, con su chasis de aluminio, es el más espectacular, son muy sensibles a las temperaturas, y en países como Inglaterra hay muchos usuarios que se quejan de ello...

FX Crown .177,es la menos que lo sufre,su culata es de polímero y creo que esto le ayuda bastante,es una carabina maravillosa.

Y por último el FX King .22 con chasis sabell-tactical, todavía estoy luchando con este rifle y estoy empezando a pensar que comprarlo fue un grave error,estoy empezando a comprender que es un rifle diseñado y creado para operar a alta potencia y disparar a largas distancias y yo pretendo lo contrario,el caso es que el rifle funciona perfectamente, y a veces sin tocar nada pasan varios balines por el mismo agujero, pero últimamente noto que los primeros disparos son bajos y lentos (usando el crony) y a los 5 o 6 vuelven a su potencia, siendo el arma muy precisa y consistente.Esto me pasa al principio de una sesión de rodaje, independientemente de la temperatura, o bien después de dejarla un par de horas, y me tiene un poco confundido.Seguiré trabajando en ello por un tiempo, le daré una oportunidad, puede que no sea el rifle perfecto, quizás necesite más experiencia.


125 / 5.0
 
I believe that anything that fires a projectile through the air is subject to a risk of POI change. Environmental factors will have an influence, but the effects should be relatively minor. That said, I have seen extreme temperature change result in POI shift that was enough to warrant a scope adjustment if in a hunting scenario. As for random, unexplained POI shifts, my rifles with robust barrel mounting designs seem relatively immune from it. These are rifles such as RAW, Taipan Vet I, FX Royale, HW 100, etc. I had an early model FX Crown with liner/sleeve design that was very prone for this behavior, so much that it was unacceptable as a hunting rifle. Since that model, changes have been made in the design, and I assume that the current rifles are more stable. But I've had no further interest in such complex barrel designs, which I see as an unnecessary risk to consistent performance.