Got a friend that decided to wait until this last weekend to sight in his TC. Hes from another state and i couldn't visit/help with him until now. He's shooting a Hornady 300 gr FPB and used 125 gr of BK209. This is for CO--so obviously open sights etc. Hes having trouble getting tight groups--my thought was that he needed to try less powder until he found consistency. I personally am usimg BK and Thor bullets in 95 gr with great success--Thoughts on his issue??