I shoot both twist and damascus with low pressure loads. If you have a sound set of barrels they have no way of knowing if you are shooting black or smokeless powder. I choose to shoot low pressure loads as much to save stress on 100 year old wood as 100 year old barrels. Have the barrels checked for all the normal concerns and if they pass shoot and enjoy them as they were meant to be shot.
This black vs smokeless is a stupid debate to me. Several different people have convinced me that the black powder pressure curve is not that much different from a smokeless powder curve. So it boils down to finding a low pressure load that keeps peak pressure to a very safe range. Most guns will work well in warm weather with sub 6,000psi loads. These are type loads that i enjoy shooting and feel reasonable confident will not make it difficult for me to count to ten, an improtant skill in the world I live in these days.
