I already have a good bit of 5744, and I am getting good accuracy out of it in my 45/70's ,but the unburned, or should I say unconsumed powder kernels are aggravating. I don't mind them in the barrel so much as being blown back into the chamber and denting the brass when following rounds are chambered and fired. A pinch of it can even be dumped from the cases after they are ejected. Hard to believe it's as accurate and consistent as it is when only part of it is consumed.!
I've also had good results in the past using SR4759, and I am thinking about going to that powder for future trials and development in the 45/70's. I need to get about 1400 to 1450 fps. out whatever boolit I use, so Trailboss is out.
What do others here use for similar applications?.