Considering the OP has only put about 100 pellets through the rifle it's probably not even leaded in yet. Any new rifle needs at least half a tin of pellets to settle down. Is it possibly shooting badly because it's using the wrong pellets? My club mate has a 97kt that has had probably 75000 pellets through it (he keeps the empty tins!!) and he can put 5-8 pellets through a hole no bigger than the open end of a BIC pen at 25M rested at our indoor club range. Most of our members who have the 97kt love them and all are accurate, but need a while to settle down from new.
Air Arms HFT 500; Walther LG300 Alutec; Umarex Winchester 1873 Carbine CO2; Umarex PX4 Storm; Umarex Walther PPQ M2; Webley MK VI 0.177 CO2: SIG M17 CO2; BSA Scorpion TS; ASG Schofield 6 CO2;