JLmoore1956
cayugad's list is complete ad very thorough work by it when you can...
#11's and T7 pellets is pretty marginal - It really takes a lot of heat to get them going and they do not have any BP on the pellet to help. If you choose to shoot pellets - you should probably go to Pyrodex pellets - they a have black powed impregnated on the base of each pellet to help get it started. If you can make the switch to loose powder I think yopu would be much happier and you would get consistent ignition even with #11's especially if they are CCI #11 Mags, but better yet might be Dynamite Noble 1075 plus caps... These fit the #11 nipple.
Bullets and sabots is another game - That game is played by finding what combination your rifle prefers and what you might be hunting. I am hunting elk so my projectile is a lot heavier than you might need for hunting whitetail. Another segment which sabot can you get down your barrel comfortably - With a night you should be able to get a standard sabot bullet combination down.
You have a great gun and with time you will enjoy it - but keep coming back here and asking questions if you do not have local help.
If it were I and I could give you some help follow cayugad's instructions.
As far as shooting supplies I would start as simple as I could get a few shots under your belt them start branching out... Pellets are the most simple way to start, but as much as I hate Pryodex they would be a good way to start - then get some easy loading PowerBelts bullets maybe 295 grain 50 cal. They are expensive but again a good simple way to start. After you feel confident in your ability to load and shoot swab the barrel. then start moving to a load and projectile that you really want to use.
A lot of people do not like BButter in a gun and have very negative reactions to it's suggested use, so keep that in mind. Most of these people are great shooters and have established routines that work for them as mine does for me.- I do not use it as a lubricantor a protectant -it is not thateffective at either of these two thingunless you are shooting real black powder.BB does work with conicals.
My barrel care routine is not on this computer so I will post this and send the the care routine in another post in the morning.
Keep asking questions - and in the end you are the final authority...