Interesting video. Not sure I'm following your load sequence. The powder funnel first looks normal enough. Then looks like you stuff a wad or two in ? Then probably the bullet. At the end you run a patch down the bore with the regular ramrod and then turn the dirty side over and stick it in the end of the barrel? Then the firing cap is placed and you fire it. So what did I see really?
Ok...I found a video that seems to be exactly like what you did. Wonder if the Civil War soldier did it that way with the cardboard hex and felt wads? Also wasn't thinking about the hex loading rod tip either, which would be special to this rifle.
https://www.youtube.com/watch?v=DXDl1em-RBM
Ok...further research. Use by military of the day was achieved by production of a stiff paper tube with the bullet, lubricated wads and powder.
To save the trouble of weighing the charges, and pressing the projectiles, it is recommended to use the Whitworth Patent Cartridge, in which the powder is carefully weighed, and the projectiles are uniform in weight, size, and figure. This Cartridge consists of a tube, containing the projectile, patent lubricating wad, and powder, placed in their proper order, ready for use. The powder is kept in the tube by a valve, or trap. When the cartridge is used, the end containing the powder is inserted in the muzzle of the rifle (which is chamfered to receive it,) and is held there with the left hand. The ramrod, which should be previously withdrawn from the stock, is held in the right hand. The trap is withdrawn by the finger and thumb of the right hand, and the powder falls into the barrel. The ramrod is then pushed through the tube, taking down with it the projectile and lubricating wad, which should be gradually and gently pressed. The emptied tube is thrown away, and the loading is complete.
The cartridges should be kept dry, but should not be subjected to a heat higher than 90° Fahrenheit.
https://researchpress.uk/research/hexbo ... whitworth/