I would contend that most (if not all) “long shelf life” dehydrated/freeze dried food products fail to deliver the calorie and protein count that is required to survive. It is far more likely that you would have to double the quantity and cost to actually achieve any specified duration. If you don’t believe me, just examine the details in their advertising.
People can get quite uncivil when starving or in trouble therefore force multipliers like night vision/thermal scopes using solar recharged batteries on suppressed rifles can let you avoid trouble or end a threat like nothing else can. Walkie talkies with ear buds and whisper microphones can also be force multipliers. That equipment should be protected in faraday cage. An early model (EMP resistant) diesel tractor with fuel can help grow food and offer transportation (with a wagon) and might save the day for your family or community.
“And carnal nature said, ‘I’ve got eight shots, they’re not by their weapons, I’m going to kill every damn one of them.’ And then I saw the women. Hollow-faced, it looked like you had draped skeletons with cloth. Horrible, and the children were the same way. Far, far worse than anything I had ever imagined. I could see it, I could smell it, I could taste it, I could feel it. It was real. It’s going to be an experience you don’t want to go through.”—A dream Len Pense had, circa Fall 2017.
Personal defense items – such as rifles and heavy firearms – are going to be increasinly hard to manage the farther you move from steady supplies. Ironically, it’s firearms that help acquire more food, provide personal protection, and deter others from attacking. In a SHTF scenario, heavy armament is only good within fortified areas. If you want to stay highly mobile, switch down to a .22LR polymer rifle such as the Savage survival rifle or similar. Lightweight, collapsible, and perfect for hunting game. Loaded with subsonic rounds, it can also be a lot more efficient than heading off a target with a loud 30-06.