In his video "building a kentucky rifle", Hershel House recommends and demonstrates really slathering on the thick axle grease. I was never really comfortable with that.
I'm also not real impressed by his demonstration of gun cleaning.
I am, however, impressed by his ability as a master gunbuilder.
After browning I put on a couple of real good coats of good old Johnsons paste wax. I have yet to pull a barrel and find rust. Though I will admit it is an accident if mine are rained on to any great degree. But water still gets under the barrel at the muzzle during cleaning and it doesn't rust there either.
I like the Chambers oil finish and when finishing the stock I put several good coats under the buttplate, in the lock mortice, the barrel channel, and anywhere else moisture might cause wood to swell. Especially any exposed end grain.
I really don't care if it wasn't done that way in the old days. I don't want swelled wood causing problems when I'm in the woods.