What *smokeless* powder have you found to work best in these large cases??? I've been all over the web. I've tried 5744, imr 4759, and Unique. Some with wads, some not. Can't say I'm impressed with any of them, but would like to hear your experiences getting a light, accurate load from these big, ol' cases.
I'm using correctly sized 250 grain boolets in the 38-55 and correctly sized 300 grain boolets in the 45-70.
I've been reading about trail boss, but it looks to be too fast a powder for rifle work.
Any, and all ideas appreciated.
Thank you.