Thanks Bob,
After I posted this I found a book Dead On: The Long-Range Marksman's Guide to Extreme Accuracy -- by Tony M. Noblitt, Warren Gabrilska and picked it up from Amazon. They have a few pages on the "iron sights" that were very helpful. The book over all is great with many tips and far beyond my needs with black powder.
Yes, I see what you mean about the cost! ($350 high to $45 low). I think I just need to start my own notes as to load and shot and as they point out stay consistent…!