I just recoil at the idea of using a Q-tip to lube interior case necks, waaaaay too much work. Forster and Lyman make dry neck lube brush kits that use motor mica lube, don't have to worry about powder contamination, only really have to dip& brush about every 3rd or 4th case, you'll feel when it needs more on the sizer button. And the dry lube is all you need with a neck die or neck/bushing die, works with mandrels too. Bag of dry lube is like 5.00 and lasts a pile of rounds, think I've used 3 bags in 45 yrs.