Unfortunately, the mix I used on my 22-250 is almost gone and it worked. It was a blend of some odd sticks of Lyman lube and Red Rooster I chucked in a pot and mixed up, there is another lube in there also, may be some old LBT of some form. That was an unrepeatable blend.
I'm very happy with the LBT soft blue lube with the 450/400 at 2041 avg. No leading.
For anything under 1800, I have used Emmerts lube. Used that in the 7x57 and the 7-08 and the 32-40.
It can be a bit soft in hot weather though.
I have to agree that the Lube section on Cast Boolits, is a bit confusing, as there are so many recipes.
The ASSRA site is much the same.
I think perhaps the trick to it, is to PM the people that have been using the bullets at the higher speeds and verify what they used. That involves a LOT of reading to figure out who to ask.