It wouldn't let me put them all in one post (more than 10000 characters?), so here's the rest:
Centerfire cartridges metric measurement
5.45×39mm[1] – intermediate
5.56×45mm NATO – Original M16A1 cartridge: Can also safely fire .223 Remington, intermediate[1]
FN 5.7×28mm – PDW
6mm Mongoose...
From Wikipedia. So, are they ALL wrong?
AR-15 cartridges
Rimfire cartridges
.17 HMR[1]
.22 Mach 2
.17 Winchester Super Magnum[1]
.22 Long Rifle[2]
.22 Winchester Magnum Rimfire[1]
Centerfire cartridges imperial measurement
.17 Mach IV
.17 Remington Fireball
.17 Remington[1]
.17-223[3]
.20...