More common is the .22 CB ammunition, which fires a slightly heavier conical bullet and is available in a variety of cartridge lengths.
(Round balls give progressively much worse external ballistic performance than conical bullets at ranges greater than about 75 yards.)
The Lefaucheux cartridge had a conical bullet, a cardboard powder tube, and a copper base that incorporated a primer pellet.
Most of them were set up for conical bullets, though, as near as I can determine.
'On that conical bullet his one chance hangs, 'Tis the weak one's advantage fair.
The heavy, steel-jacketed conical bullets punched through iron and sheet steel and found the driver.
Among the first pointed or "conical" bullets were those designed by Captain John Norton of the British Army in 1823.
Earlier models listed as .44 caliber, later as .45, but all use a .457" round balls or .454" conical bullets of pure lead.
The latter, who had been basking quietly, disappeared at the sound of the explosion, but did not seem to be otherwise incommoded by Kennedy's conical bullet.
The minie ball, being an elongated, conical bullet, has much more mass than a round ball of the same diameter.