My buddy and I are preparing for an elk hunt and he is having issues. He recently bought a new t/c triumph and put a BDC scope on it. The problem is while using BH powder, usually 110 grains, and a variety bullets and sabots he has not been able to keep groups from one day to the next. We would go to the range, he would find a load that was shooting well and then go home, clean his gun and the same load would be all over. We even run a dry patch down after every shot even though it's Blackhorn. He has tried Barnes Tez, tmz, with original and harvester sabots. Different Hornady bullets and sabots ect. Some would shoot well and then they wouldn't. Baffled.