Just back from the Range. With a TC .50 Hawken 1:48 barrel I used only 70 gr of 777( I was using 100) and raised my rear tang sight to compensate. My groups are real tight at 50 yards. One group was less than 2". Shots are not varying from right to left on the target and I can control the gun more. Thanks for your advice. "less is better in this case". When I run out of 777 I will get some Goex. Thanks again.