I prefer an 80/20 venison pork fat mix, rather than blending fatty pork. It’s plenty fat enough to smoke or otherwise. I can’t use commercial mixes as wife has allergies, so tend to roll my own. I go:
16 ounces spices for 25lb
8 ounce salt
2 ounces pepper (usually a blend of white and black)
2 ounces paprika
1.5 ounce onion powder
1.5 ounce garlic powder
1 tsp marjoram
1 ounce mustard powder
1 ounce of pink cure
Best if you do your spices after chunking and before first grind, grind coarse, medium, medium, fine, add 2.5lb ice after 3rd grind to keep temp down, start binding. Mix well with about 500ml water (dissolve pink cure in it) until you get a well bound consistency, stuff from there.