I have two double barrel caplocks that setup is for a original from 1858 with Damascus barrels so I don't load it very hot and use mainly for rabbits. The other is a modern made Pedersoli that one I use 90 grs in it and have a different load tube for the powder flask.
The Pedersoli shoots much better but is a bear to load because of the screw in chokes, it's a pain in the A trying to get the wads past a full choke.
I use the same loading technique for both powder, thick carboard over powder, fiber wad, shot and thin over shot wad.
Results vary the older gun if it ever had chokes they're long since worn out so game has to be pretty close to be effective. The newer one is about as effective as a 2 3/4 shotshell.
Short story on hunting with a muzzleloader shogun. I took the newer one duck hunting once just for grins. The guys I hunt with told me I had to shoot last and for good reason, on a cold breezeless morning the smoke from my gun would just hang in the air for minutes making ducks hard to see.