I have used BL-C2 in my 223 with good results. I shoot a Ruger #1 w a 24 inch barrel that isn't especially accurate (.6 -.7" is its best group), 10 inch twist. I don't know that its the best powder, I like the 4895s a lot too, but when I bought it, the BL-C2 was much cheaper and I liked that a lot. Its quite close to ww748 I think. I think it does tend to be a bit dirty and takes some vigorous cleaning. As a ball powder, its my understanding that it can be a lot more stable for long term storage.