But my point was the issue of RE-SUPPLY i.e. once you shoot all of your ammunition where are you going to get new ammunition????
Supply is one of the hardest parts of forming up any army (and that what we are talking about). The easier you make the supply chain the more NEEDED supply you will get to the troops needing the supply. One way to do ease the supply chain is to keep the number of different calibers of weapons in use to a lowest number you can. Thus the reason I picked the five weapons I did. All are popular, all can be purchased in most gun shops and most Stores that sell Ammunition. Furthermore you can buy large quantities of those rounds over seas (With the exception of the 30-30) to be shipped back to the US if needed.
Supply is the reason the US Army uses just the 5.56mm and 7.62 rounds. In some circumstance other rounds would be better, but the need to keep the supply chain as simple as possible is the reason the US Army only uses these two rounds (and the Russian Army uses only the 5.45x39 round the 7.62x39 round and the 7.62x54R Round).
As to your comment on cans goods, I agree but you must make sure you have enough for yourself and your family (You will not be a good soldier if you believe your spouse and children are starving to death, thus you must make sure your spouse and children are feed). Always plan for an extended time period without access to food, it is generally recommended at least three months and preferably a year supply of food and other items (i.e. clothes, razors, soap, shampoo, needle and thread etc). Please also note any supply has to be items you use today. Do not think you will quickly convert from hamburger to pasta because pasta keeps better than meat. You need to start eating food that does not need electricity to store TODAY. Cut back and use the proceeds to buy what you think you will need. Keep refreshing the items i.e. buy pasta today, but use the pasta you purchased three months ago (To keep fresh your stock pile).
You also need to secure a means of transport for gasoline will be kept in short supply (For this purpose I recommend people to buy themselves a good Bicycle and a trailer for that Bike. Just to haul extra Ammunition and food around). Now do not plan to move all of your food at once, remember you can make trips to haul the items from one location to another if needed (A bike trailer makes this much easier to do than by back back).
Remember the tools of repression are Propaganda, Terror and Starvation. If the oppressors can not convince you to support them, they will try to scare you NOT to oppose them. If they can not scare you than they will starve you into submission. Study Maslov's Hierarchy of needs. Maslov devised it to show what people can do once certain needs are meet (and what people can NOT do if those needs are NOT meet).
For a dicussion of Maslov's Hierarchy of Needs:
http://www.wynja.com/personality/needs.html