well dreyse realized/discovered that the charge of black powder combusted back to front, and used the ENTIRE barrel as a combustion chamber. Typically wasting powder by tossing it to burn outside of the barrel. LOTS of muzzle loaders have seen that. Its why I don't use 3 pyrodex pellets, last one loaded ALWAYS burns outside the barrel and acts like a tracer. First time that happened it scared the crap out of me.

Although more powerful then most front loading rifles of the period, dreyse and chassepot were more powerful and seemed to have better accuracy. They did use the same bullet technology that every one else was adopting to muzzleloaders.

I guess a better test example would be what would be more enherently accurate, a P53 Enfield Rifleicon muzzleloader versus an identical P53 that was turned into a snider