The one thing that bothers me about blended rifle powders is during shipping and handling you are going to get settling in that process. I don't like the deal. Is it enough to make a huge difference in groups maybe not? But building tack driving rounds probably not. I've been playing with them and I'm not sold on it. I'm not happy with a load until it can out shoot me. Then the rest is human error. At the groups you posted I would choose another powder or start at a lesser charge and work back up. Don't mean to offend.