Axtell3,
While I did not read the entire article you linked to, one paragraph was all it took me to know that this guy didn't have a clue about Black Powder or the loading of these old cartridge rifles, I do have a comment or two.
I competed for over twenty years shooting these old BPCR rifles. BPCR is Black Powder Cartridge Rifle, I shoot in Creedmoor Matches across the country as well as Long Range matches out to 1,000 yds but mostly I competed at Silhouette. The loading and shooting of these old Smoke Poles is really one of the simplest forms of Hand Loading there is. Cleaning a Black Powder Cartridge rifle takes all of 5 minutes and was never the task so many associate with Muzzle Loaders, which can be a bear to clean. As an example when shooting a Silhouette match the normal shots for record are either 40 shots or 60 shots, add to this unlimited shighters shots within the timed period you are looking at anywhere from 65 to 90 or so rounds fired in one day. I never cleaned my rifle during the day only at the end of the match. These rifles are capable of extreme accuracy especially at known distance's when loaded correctly, and once the shooters learns how to control the fouling that is always present with Black Powder.
Pyrodex in comparison is just the worst stuff you can shoot, it is extremely corrosive, and will "NEVER" provide the accuracy that is there with Black Powder.
Big Nasty, I would recommend you talk to someone who knows how to load one of these old rifles before you take Grandpa's advice. No black magic shooting one of these, but anytime you use words like Ball Peen and Frog's Butte and are talking about shooting you are headed down the wrong path. Drop me a note and I would be glad to show you the path...
Gunny