MY INITIAL COMMENT:
My Five before I watch this video:
BONUS: .38 Special/.357 Magnum -- Have .357-capable arm, but stockpile .38.
Always go with NATO standard and common calibers.
Let's see if you got it right.
MY REPLY TO MY COMMENT ABOVE AFTER WATCHING VIDEO:
I figured you'd say .22. Clever not-so-encrypted reasonings. While having some is good, truly stockpiling it is unnecessary. Better use for money.
Wrong on 6.5. Stick with the standards--7.62mm NATO.
12-gauge is fine, of course, but still has the size drawback.
.50 BMG is fine for bonus caliber.
YOUR SCORE: 3 out of 5, with a pass on 1 (12-gauge) => 3 out of 4 = 75%.