You didn't say what caliber you have but most likely it is a .50 caliber. I just referred to my copy of the Lyman "Black Powder Handbook and Loading Manual" and for a .50 caliber rifle shooting the T/C Maxi Ball that you show in your post, the manual shows a load ranging from 60 to 120 grains of Goex or Elephant 2f or 3f and the same volume equivalent for Pyrodex RS or Select. I'm thinking that something in the range of 80 to 100 grains will be a very good hunting load. I can tell you from personal experience that a load of 120 grains of Goex 3f behind a T/C Maxi Ball will kick like a mule.
For a good lube, you will want something kind of thick. In cold weather, Bore Butter will do the job. If you use something like that, you will find that it is better to lube your bullets ahead of time in the warmth of your home where the Bore Butter will come out of the tube easier. Once it gets nice and cold, Bore Butter doesn't want to come out of the tube easily. Just lube several Maxi Balls at home and wrap each one in a piece of paper to keep your possibles bag or pockets clean. When you are ready to load one of your pre-lubed rounds, just unwrap it and load it. Doing it this way will make loading in the field much easier.
If you have some bees wax, you can make your own lube to the thickness you like...thicker in the summer and thinner in the winter. An easy recipe is to melt some bees wax in one can in a pan of boiling water and some lard in another. When both are melted, mix them together. The proportions will depend on the temperature in which you are going to use it. Just play with the proportions until you get what you want. Add bees wax to thicken or more lard to thin it. After mixing the two melted ingredients, I like to add about a tablespoon of Murphy's Oil Soap and beat the mixture until it cools. This makes a nice creamy lube and the Murphy's helps with keeping the fouling soft. This is just one of ga-zillion lube recipes.
