I have one of these guns. I bought it, on a whim, for $40 out of the bargain barrel at a local gun store. It is, by far, the worst shooting gun I ever shot. Accuracy is terrible and I struggled just to get it on paper. Factory ammo is from Norma and very $$$$ and I could not justify wasting ammo on dies. It's been sitting for years
It's probably 100% the rifle's fault. I'd imagine the cartridge itself could be pretty accurate in a good rifle.