It is absolutely amazing how little of this product is required to do even the most difficult sizing operations.
I would still avoid putting any on the shoulder of the case.
I first became aware of this product about 20 years ago.
Bought a small tin....lasted a long, long time, and at the time, I was shooting 3000+ round of CF ammo per year.
I finally replaced the empty with the new, larger tin.
Probably will last till I cannot shoot anymore, lol.
As for the neck insides, I have always used powdered graphite for that.
Regards, Eagleye.