The closet thing riflemen had to a "speedloader" was a loading block, mine has 6 holes in it, a lanyard to wear around the neck. You put 6 patched balls in it, that speeds up the loading process a little. The smoothbore musket was more popular as a civilian firearm, the Eastern Woodlands were pretty thick then (still are), long distance capacity was not need, plus the smoothbore could double as a fowling piece.