Originally Posted by Drew Hause
I think the data also confirms that it is not hard to reproduce vintage load, black powder, bulk and dense powder, pressures today

It's never been hard, until now... the canister powders we traditionally used for that task are discontinued or unavailable.

As posted recently, there is now available a small supply of 700X which can be useful for some 'lower pressure' loads.

"The price of good shotgunnery is constant practice" - Fred Kimble