1) I'm surprised how much different the point of impact is when changing ammo even at 50 yards. You clearly have to zero for every pellet.
2) Rifle hold and follow thru mean a lot. Every shot hunting is somewhat if not dramatically so. I will have to try to do as much as I can to reduce that variable.
3) conditions change over time. If you're sitting for extended periods watching for birds (or what ever) wind ,lighting and even temperature changes and probably affecting the shots .
4) Flyers and pulled shots ( we know we all get them.) You can miss a target to the right and then dial in some left windage but is that necessarily a good idea? If you pulled a shot or if it was a flyer or a gust of wind caught the pellet and you didn't notice you can begin to chase the point of aim and work against yourself. I am suggesting that there are many reasons for a miss that might not require a change of the scope settings. I tend to do this. Make adjustments from shot to shot and find that some times I help myself and some times I'm working against my own best interests.
5) GROUP SIZE. my guns and I were shooting pretty well this morning. I shot a bunch of 5 shot groups at 50 yards and very few were over 1 inch. BUT my hunting is at about that same distance and I'm shooting at sparrows and starlings. To hit every one I'd have to do my part perfectly every time meaning I'd have to break the trigger dead center and judge the wind perfectly. Which I certainly don't do.
6) Ammo selection. I can shoot ragged holes at 50 yards some times but ONE five shoot group doesn't make a winner. Of my guns and ammo my 25 cal Cricket shot the best group this morning using 34 grain JSP pellets. If I can do that tomorrow and then next day I MIGHT be on to something. Think it will happen ? So many times the next day things are entirely different that ragged hole group I shot yesterday is an inch
7). The picture posted is of that one best group. Not that it means much. However to shoot at small targets at 100 yards and beyond you better shoot one holers at 50.
8) I'll try to follow up tomorrow and maybe sneak over to the range and try 100 yards.
9) Lastly what is the best you can expect of yourself? I noticed my heart beat when aiming at the targets this morning, The gun is picking up my carotid artery pulse. It's not much movement but it would certainly make the difference between a one half inch and a one quarter inch group. (I don't shoot 1/4 inch groups its beyond my ability)