This is a quote from Samuel Colts pistol instructions which you folks may find interesting.
I only copied it down to the end of his discussion on loading his cartridges.
His mention of piercing the end of the Cartridge leads me to believe it is his foil cartridges that are being described.
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" DIRECTIONS FOR LOADING COLT'S PISTOLS.
First explode acap on each nipple to clear them from oil or dust, then draw back the hammer to the half-cock, which allows the
cylinder to be rotated; a charge of powder is then placed in one of the chambers, keeping the barrel up. and a ball with the pointed end upwards without wadding or patch is
put into the mouth of the chamber. turned under the rammer, and forced down with the lever below the surface of the cylinder, so that it cannot hinder its rotation
(care should be used in ramming down the ball not to shake the powder from the chamber, thereby reducing the charge).
This is repeated until all the chambers are loaded. Percussion-caps are then placed on the nipples on the right of the lock-frame, where, by drawing back the hammer in the full-cock
the arm is in condition for a discharge by pulling the trigger; a repetition of the same motion produces the like results with six shots without reloading.
It will be safe to use all the Powder the chambers will hold, when loading with the flask, leaving room for the Ball, whether the Powder is strong or weak. Fine grain Powder is the best. Soft lead must be used for the balls. The cylinder is not to be taken off when loaded. The hammer, when at full cock forms the sight by which aim is taken.
To carry the arm safely when loaded let down the hammer on one of the pins between each nipple, on the end of the cylinder.
The arm should be throughly cleaned and oiled after firing, partriculary the arbor-pin on which the cylinder turns.
DIRECTIONS FOR LOADING WITH COLT'S FOIL CARTRIDGE
Take the white case off the Cartridge, by holding the bullet end and tearing it down with the black tape. Place the Cartridge in the mouth of the chamber of the cylinder,
with the pointed end of the bullet uppermost, one at a time and turn them under the rammer, forcing them down with the lever below the surface of the cylinder so that they cannot hinder its rotation.
To ensure certainty of Ignition, it is advisable to puncture the end of the Cartridge, so that a small portion of gunpowder may escape into the chamber while loading the pistol...."