Thanks everyone for the advice. I do know about the pressure curves for smokeless and black powders being different. I also know the relationship between chamber pressure and barrel integrity as well as payload and felt recoil. I do not see the need to hurl shot at velocities faster than 1200 FPS as they do not retain it and doing so puts undue stress on both the shooter and the gun.
That is why I am looking for proven loads from documented sources. Yes I could work up some loads that are equivalent to those in use when the gun was new but I want to preserve it as well as enjoy it, hence the low pressure and reduced payload request.
Dave
