Hate to break it to you, but your dog probably has a better chance of making it through a total societal collapse than you do. A quick Internet search of "dog survives" lists everything from drowning to being shot, from bear attacks to war -- whereas the closest you've ever come to "surviving disaster" is getting your wisdom teeth pulled, and even then it was only with the help of a cadre of trained medical professionals and a carton of the strongest painkillers on Earth.
Some evangelical Christians hold to an interpretation of Bible prophecy known as the post-tribulation rapture, in which the world will have to go through a seven-year period of war and global dictatorship known as the "Great Tribulation". Jim McKeever helped popularize survival preparations among this branch of evangelical Christians with his 1978 book Christians Will Go Through the Tribulation, and How To Prepare For It.
During his presentation, Mr. Charles suggested that a well-prepared bug-out bag was only part of the equation; just as important was knowing where to go. “Bugging out will not be easy,” he explained. “It might take three or four hours to get out of the city. If the bridges are blocked, you might have to use a raft to get across the river. Everyone’s situation will be different.”
I can’t agree with your solution for water purification. If the argument is to “also” include scenarios where boiling isn’t practical, there are other options that fit the bill. For us, we’ve been using a Berkey filter system in our home instead of something that needs water pressure or power to serve in both bug out and Flint, MI like scenarios. We use it day to day today. Not cheap upfront but the cost per litre/gallon over time is a fraction of what you’ve proposed – with all due respect.
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.
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