The Washington Post article I read said "Walmart will stop selling ammunition for military-style weapons..."
https://www.brainerddispatch.com/bu...g-some-ammunition-and-exit-the-handgun-market
If I read that right then Walmart should no longer be carry any of the following calibers since there are AR style rifles in the following chamberings.
17 Mach 2
.17 HMR
.17 Winchester Super Magnum
.22 Long Rifle
.22 Winchester Magnum Rimfire
.17 Mach IV
.17 Remington Fireball
.17 Remington
.17-223[3]
.20 Practical
.204 Ruger
.222 Remington
.223 Remington
.22 PPC
.22 Nosler
.224 Valkyrie
.224 Kritzeck
.223 Winchester Super Short Magnum
.243 LBC
.243 Winchester Super Short Magnum
.25 Winchester Super Short Magnum
.25-45 Sharps
.277 Wolverine (6.8×39mm)
.30 Carbine
.30 Remington AR
30 American
300 OSSM
300 AAC Blackout (7.62×35mm)
.300 Whisper
.350 Legend
358 Yeti - Wildcat
375 SOCOM
.40 S&W
.45 ACP
.450 Bushmaster
.458 SOCOM
.50 Action Express
.50 Beowulf[15]
5.45×39mm
5.56×45mm NATO - Original AR-15A2 caliber: can also safely fire .223 Remington
FN 5.7×28mm
6×45mm
6.5mm Grendel
6.8×39mm (.277 Wolverine)
6.8mm Remington SPC
7.62×37mm Musang
7.62×39mm
7.62×40mm Wilson Tactical
7.92x33mm Kurz
9mm Parabellum
10mm Auto
9x39mm
.338 Lapua Magnum
.408 CheyTac
.50 BMG
.220 Swift
.22-250 Remington
6mm-250
.243 Winchester
6MM Remington
6MM Creedmoor
257 Roberts
6.5×47mm Lapua
6.5mm Creedmoor - same bolt as 7.62×51, and can be formed from 7.62×51 brass
6.5 WSM
.260 Remington - same bolt as 7.62×51, and can be formed from 7.62×51 brass
.270 Winchester Short Magnum
7mm-08 Remington - same bolt as 7.62×51, and can be formed from 7.62×51 brass
7.62×51mm NATO - Original AR-10 caliber
7MM Winchester Short Magnum
.308 Winchester - considered interchangeable with 7.62×51mm NATO according to SAAMI.
.300 Winchester Short Magnum
.325 Winchester Short Magnum
.338 Federal - same bolt as 7.62×51, and can be formed from 7.62×51 brass
.338 Winchester Short Magnum
.358 Winchester - same bolt as 7.62×51, and can be formed from 7.62×51 brass
.358 Winchester Short Magnum
.375 Raptor - same bolt as 7.62×51, and can be formed from 7.62×51 brass
.375 Winchester Short Magnum
.416 Winchester Short Magnum
.450 Marlin
.45 RAPTOR
.458 Winchester Short Magnum
.500 Auto Max
.50 Krater
.510 Winchester Short Magnum
.300 Winchester Magnum
.30-06 Springfield
7mm Remington Magnum
.270 Winchester
.25-06 Remington
.338 Lapua Magnum
.458 Winchester Magnum
12ga
410ga
20ga
That's a lot of missed sales.