Good luck - you're on the right track - for sure.
For me, when switching to oil or grease over a water based lube, I usually have to increase the load some - 5 to 15gr. to achieve the same accuracy. I also found the really slippery lubes, like LHV and Hoppe's #9 Plus demanded more powder.
The smaller bore sizes seemed less effected, load and sighting, by switching lubes, than-do the larger bores.