I would like to know what you are shooting out of your Traditions deer hunter. Off hand I dont know how many grans of powder and what bullet I was shooting but I'm looking to see if there might be something better then what I am currently using/doing.
From all I have read, you should use only round balls in a flintlock. Cap and in lines are different. I am loading 80 gr. FF above the .490 Speer round ball and .015 patch.
You need to do more reading.... It doen't matter if its a flintlock or inline. What matters is the rate of twist coming out of the barrel. most modern flint locks have a 1:48 or 1:28 which is perfectlly fine for sabots or any other type of projectile. 1:66 is better for round balls, and will usually cause modern projectiles to tumble in mid flight.
The kits come with round balls so I would think you could shoot them.I'm thinking about using powerbelts.Are they legal for hunting the late season?I will say thinking about killing a deer with a round ball seems appealing to me.They are not real available around here though.