Rather than boycott Walmart over such a minor matter, I would email the company to ask what the reason is for this ammo sales policy . Here's the link : https://corporate.walmart.com/contact-us/store-corporate-feedback
By contrast : K-Mart
thumbed its nose at us when Rosie O'Donnell was their spokesperson . Walmart
caved in to HCI and stopped displaying handguns long ago . Field & Stream
is owned by Times Mirror of England and does nothing I know of for gun rights . Jim Zumbo
trashed the AR-15 in his blog and paid dearly for it . These are more serious matters .