Total agreement - almost, with Pete. I've tried adding paraffin to lubes for the bullet shooters and found it inferior to just straight
beeswax/tallow (tried that once, worked fine) or beeswax/Vaseline. Paraffin did not shoot well in my guns with black powder. I found
straight beeswax/Vaseline about as good as anything and better than most. At this point, not sure if it's better than SPG or not as that one
is also very good. For patch lube, straight Track's mink oil or Neetsfoot Oil are wonderful shooters & need no wiping with 'normal' loads,
thus, I see no need to mix fancy lubes for a muzzle loading round ball rifle, imho. If shooting bullets, SPG works fine as well as the Vas/BW mix.
I used 60% BW, 40% Vas. 10 shots fired no wiping and sub 1/2" accuracy at 50 yards, then went back to patched round ball without having to wipe the bore.