That was the 1st article I read in the new issue. From his test it was very close between Sperm Whale Oil vs Spit when measuring center to center of three shot groups from 2 test guns. He listed results from a .45 cal. Green Mt barrel with Sperm Oil being .26 and .46 vs Saliva being 1.06,1.18, and 1.27. In the other test gun, a Rice .50 cal., he listed the results of Sperm Whale Oil being .51 and Saliva being .65. I find it odd that the .45 cal. gave both the tightest groups with Sperm Whale Oil, and also the widest groups with saliva/spit compared to the .50 cal. test gun. The .50 cal test gun did not show the same type of results comparing Sperm Whale Oil vs Spit. That leads me to question more than just the lube for the differences in group size.
Having done a quick search for Sperm Whale Oil, it's a big no no, $2000.00 fine to buy or sell it. And I'm not sure if just possessing it is legal. I even found that Dixie is selling somekind of synthetic replacement for Sperm Whale Oil. But I'de be surprised to find it compares to the real McCoy. Since I have a dry mouth I guess I might try the nest best thing to Whale Oil or Spit.........fish oil?
Were the same loads, ie: powder charges tried first with one then the other lube - or were the loads worked up for the best accuracy with each lube then group sizes compared?
If you are comparing lubes to determine which gives the best accuracy adjusting powder charges is necessary. Not adjusting powder charges will deliver spurious results that are next to meaningless, only trends can be shown.
For example - in testing my .40, had I merely used spit's best accurcy load of 55gr. 3F with LHV, the spit would have won out with 1/2 the group size of the LHV.
However, final testing, using 65gr. 3F, showed that LHV had a very small, maybe 1/10" advantage in absolute accuracy over spit - which might have been reversed with a simple patch material change - there are so many variables, it would be quite tedius to do a complete, comprehensive test.