Taking advantage of the longer throat, the 5.56mm can safely operate at a more powerful loading level.įiring a 5.56mm cartridge (which is loaded to higher pressure) in a. 223 Remington ammunition is loaded to a lower pressure.Ģ) The 5.56mm cartridge is loaded to higher pressures than the. This longer throat reduces pressures as compared to the. 5.56mm has a longer throat or leade (the the unrifled portion of the barrel between the end of the chamber and the beginning of the rifling). 223 Remington, there are two important differences:ġ) The chamber dimensions between the two cartridges are different. While 5.56mm NATO ammunition is identical in external dimensions to. It is a common myth that the mini14 is chambered in. The Ruger Mini-14 has a 5.56 chamber but can shoot. pdfs for the 580 series and 180 series mini14s listed above for verification: 180 series: 580 series: The above means that 5.56nato ammunition can be used safely in the rifle. 223(5.56mm) caliber ammunition manufactured to U.S. " The Mini14 is designed to use EITHER U.S.
The Mini-14 Ranch Rifle is designed to use either
The RUGER® MINI-14® RANCH RIFLES are chambered for the. "AMMUNITION (580 series mini14 and above) The mini14 receiver is marked ".223 CAL" not ".223 rem." Yes you can, the mini14 has always had a 5.56x45 chamber.
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