Thank you for posting this! The black powder pressures in comparison to the Smokeless are interesting considering, I assume, quite a few older guns would have been fielded using the "new" loads. I know my one uncle used a Damascus barreled Baker 12 gauge up until he died in 1986, his shell of choice was the Winchester Super X 1&1/4 ounce loads. I don't know the pressure of those shells and that may have changed since? The gun was choked full in both barrels. Thanks again.