Let’s face it. 1000 rounds total of all calibers is all anyone needs.
If you can hold ‘them’ off long enough to expend that much, they are going to take you out with a drone strike or an anti-tank round anyway.
The idea of being able to hold out via firepower for months is a joke. You can lay low that long, but once they find you, it will end pretty quickly.
See 53. Its all about how much training you plan to do. Defensive shooting, small team shooting, those are perishable skills. You cant be proficient with 100 rounds a year.
That is why the 22 cal is so important, they are useful for eating when the store close. You may be able to defend against a neighbor but you can not defend against a full on attack whether civilian or military. Those that think they can have been to too many firing ranges. Practice is over rated if you know how to shoot it is like riding a bike. We are not talking about olympic style shooters here. If you really think you need that long range sniper shot then buy a never miss scope and never miss they make them now. I just did a quick look on YouTube and those videos seem to be gone now. Price is a big downside.