Contact Thompson Center Customer Service through their website, and request an owner's manual. Muzzle loading rifles are great fun, but instructions must be followed exactly to reduce the chance of death or serious injury.
you probably just stop and load.
A magazine
Put the ammuniton into the magazine and put the magazine into the rifle, cock it and pull the trigger..
No they won't fit. If you force it, it will ruin the rifle.
Ask a gunsmith.
Possible, but, expensive.
ask a gunsmith for help
like a hell load of cheese balls
Depends on your sensitivity to recoil and the type of rifle and load used. Generally, not bad at all.
I cant find this answer anywhere but I know with the 26" barrel there's not too much benefits of using more than 100 grain.
Either can depending on the load
Ask a gunsmith for assistance.