Shot with my hw30s .177 today, a gun that i have not used for some time, i even forgot what pellet she likes best, but bought with me some tins of jsb in 7.33gr, 7.87gr and 8.44gr, i had a note that the jsb 7.33gr was better than the 8.44gr so i started with them, 15m and 30m, 15m was only a big hole at the right of center bull, so i shot at 30m and the impacts was a little spread out with flyers both south and north, but there was some wind so i thought that was the case for the flyers, but i changed pellets to the 7.87gr, 15m same thing just a big hole but maybe 1cm above the center... with heavier pellets... At 30m i had to hold between the center and first mildot so i adjusted 3 clicks down to get it more close to the first mildot since it was shooting high at 15m also, first shot at 30 aiming 1 mildotlow i hit high, what? Next shot i hold dead on and i hit the center.. Next the same, and the next.. New target at 30 and I hit lower and lower, then in the bull again, then to the right hmm started to think the scope was loose, but i tried to hold it different and when i hold the gun tight i was way of, when i barely touch it and let the gun do its buisness i hit to the right, loose at the shoulder and not holding the grip just touch the right side and the thumbs on loose on the back of the grip and the left thumb on the left frontside resting the gun in the v of the triggerstick, dead on, shot after shot, if i don't follow this i can be 2" of... Airguns are mysterius creatures...