One item I neglected to mention in my post. It was mentioned early on with your conversations with Bruce.
That item was Boron Nitride.
I think and would recommend that item should be remembered as a possible additive at some point... maybe when the "lube" is about perfected.
I have limited experience with Boron Nitride and it is all with "J" word slugs. I really like what I have seen however. I have long thought a lubricant on jacketed would also help. What would happen mixed in a cast boolit lube is anybody's guess as it is like comparing cats and dogs. But just maybe... back to those cold barrel first shot fliers..
Dave Tubbs (long range match shooter?) has a site where he sells Boron Nitride "kits". I don't think he would mind me copying a paragraph to here. It might sell some for him!
"But the biggest reason to use Boron Nitride on your bullets, the most important advantage Boron Nitride coated bullets have over bare and Moly coated bullets, is that the first shot from a cold, "dirty" barrel will go into the group (of all the subsequent shots). You can't say this about Moly coated bullets, and in David's experience, the first shots using Moly coatings usually go low, and bare bullets are unpredictable."
Kind of a near home comment huh?
Also I would like to clarify my comment about smearing some Alox 350 onto a round to use for a cold barrel first shot. My prior comments could be misunderstood as smearing and then loading the round as I re-read my post.... I smeared the thin amount of extra lube outside onto a regular already loaded round from my box for the first shot. It works so far.......