He shouldn't unwrap his paper cartridge - the diameter of the ball was precisely designed to take into account the paper strength - and still both can be loaded fairly easily when using paper strength and ball diameter as in the contemporary regulations.
Understand this was second-hand, so whether he had a complete paper cartridge or simply the powder and shot, I didn't ask. He did suggest that it was a conscious effort to encase the bullet with paper as opposed to simply pouring the powder and ramming ball and paper down after it.
Well, like today, there were lots of opinions on weapon quality and performance, for a variety of reasons. British officers as well as Scharnhorst would very dramatize conditions to emphasize the need for improvements.