You are stuck at a truck stop. Out of cash but need to buy gasoline so you can reach your bugout spot. You approach a truck driver who is filling his tanks.
You have two valuables to offer in exchange for fuel. In one hand you have a gold coin easily worth more than the price of the fuel. In the other hand you have a brick of 22 LR. Which of the two is more likely to be accepted at that moment?
Your question again on how much ammo is enough?
Put on you fire retardant suit the FR ‘goldbugs’ will be coming for you in 10..9..8..7.....
“The day may arrive when a pound of tobacco will be worth more than a pound of gold.”
- Pat Frank, “How to Survive the H-Bomb & Why”, 1962.
A barter economy is very temporary and short-lived. Gold has been money for 3000 years.