I agree - you really need just one in each category he mentions (handgun, .22 rifle, large cal bolt gun, semiauto rifle). He’s got multiples in each category there, particularly the semiautos (AK, AR, Garand, Mini).
Also, a Mossberg 500 shotgun can swap in for the Rem 870 and is a bit less expensive.
One thing to consider is standardizing calibers as much as posssible, as in not having 100 different calibers around that would get confusing if TSHTF.
LQ
“A large caliber rifle, .22 rifle or pistol, 9mm or .45, and pump shotgun are the basics.”
One of each...just a list with multiples to choose from.
I would suggest as few as five:
1) 9mm or .45ACP handgun, preferably with a minimum capacity of 8 and extra magazines. These two are perhaps the most commonly used of all handguns, so finding additional ammunition should not be as problematic. Additionally, stopping power is adequate.
2) .22LR rifle, preferably semi-automatic (or at least magazine-fed). In a catastrophe, this would be one of the most likely survival rifles, as it can take down most small and medium game (and even deer with a well-placed shot). Additionally, it’s relatively quiet as far as guns go.
3) Pump shotgun - Mossberg 500/590 or Remington 870. 12 gauge is very common and can be used to hunt most anything. The interchangeable barrels can certainly allow you to go from hunting doves to hunting deer in a matter of a minute or two. It’s also an ideal weapon for home defense.
4) Semi-automatic rifle - AR-15, Mini-14 or the like. .223 ammunition is quite common. AR-15 magazines and ammunition would be everywhere in the case of a disaster. The Mini-14 would be the second most common, and magazines wouldn’t be too hard to find. Additionally, as the “American AK,” cleaning is far less of an issue.
5) Long-range rifle - Call it a sniper rifle or for hunting big game, a scoped .308 or .30-06 would do just fine here. It doesn’t matter whether it’s a DPMS LR-308 or a basic Remington 700, I think the idea is to take down large targets at a distance.
Ten guns is overkill. It’s better to have five accurate, reliable weapons with plenty of ammunition.