I finally got to the range on sat. the best result was a 3" group with 250 thor 80 grain by weight black horn. I put a scope on just to get a load sorted out. 80 by weight is around 110 by volume. I didn't get to try different charges because rain came.I then went back early today figured i would start with a clean gun at 80 grains again for three shots then try other loads. the result was all three shots where dead even on windage but elevation was about 3" variation. the thors go down with different pressure and I do the same cleaning every time 2 lightly damp patches with butches. I'm guessing the varying elevation is something that can improve but not sure what to change, any ideas would be helpful. I never got to try other charges it started raining hard and hasn't stopped.