Folks, my mentor from 40 years ago said to always think of each gun you own as part of a system. You should stock enough ammo to keep it going when there was no more available or being made, have as many spare parts as may be needed to keep your pc. working{talk to gunsmiths about each model} and have plenty of magazines to keep that expensive semi-auto from being a real hard to work single shot , and if possible have duplicates of all your "serious" firearms. But mainly stock ammo all the time do not wait until times like now. For the more expensive ammo, buy 1 box a payday each and every week. If you had been doing this for the past years you would not now be running around paying higher than average prices.