I have a service6 I have only taken to the range a few times and I haven't been thrilled with how and where it shoots. I asked someone else to shoot it so I could tell if it was my poor shooting or something else. I was shooting 130 grain Winchester jacketed round nose. At 10 yards the gun was all over the place, at 25 yards it was on. The gentleman that I asked to shoot the gun said that the load was to light and the bullet wasn't spinning properly at close range. I don't get the whole thing. Anyone have any ideas? What factory loading has worked well in this gun for people?