Will the NATO 5.56 cartridge work well in the Remington model 700 223 caliber?

Yes, the NATO 5.56 cartridge can be used in a Remington Model 700 chambered for .223 caliber, as both cartridges share similar dimensions. However, it's important to note that the 5.56 NATO is loaded to higher pressures than standard .223 Remington rounds, which may affect accuracy and safety. Always consult the firearm's manual and consider the specific chamber design to ensure compatibility and safe operation.