I never lube ine inside of the neck. I choose to use Forster hjgh pressure lube on my fingers and put a bit of it on the buttom of the bullet, works great for me.Lube i use is RCBS 2 and a nylon brush. Some use a dry lube.
A Q-tip can leave unbalanced amounts (glob) of lube in the necks, using Lee lube. A boatail bullet will trap lube, more on one size, causing runout.