.223 Rem. / 5.56 NATO ** Best Seller **

$44
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  • Wet-tumbled/polished, once fired .223 Remington / 5.56 NATO rifle brass sourced mainly from indoor ranges
  • May include a variety of manufacturers and headstamps, including 5.56 NATO (military) brass which commonly contains crimped primers
  • Spent primers will still be intact in the cases and must be removed before beginning the reloading process
  • Extra brass cases will be included to make up for any stray calibers, unusable pieces, or other cosmetic defects that may slip through our screening process 
  • We ship orders within one to two business days of receiving your order on our end. Orders are shipped using USPS Priority Mail which includes free shipment tracking.
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.223 Remington / 5.56 NATO

.223 Remington (sometimes referred to as .223, .223 Rem, 5.56, 5.56 NATO, 5.56x45mm NATO) was designed in 1957 through joint efforts by Remington Arms and Fairchild Industries for the U.S. Army. .223 Remington is one of the most popular cartridges worldwide. Some factors of what makes .223 Remington so popular as a small arms caliber are performance, versatility, accuracy, high velocity, weight, and low recoil (just to name a few). It is often considered a rifle cartridge but in certain platforms it can/is considered a pistol cartridge. Many people refer to .223 and 5.56 interchangeably, but although similar, there are some critical differences. 5.56 NATO ammunition is typically loaded for much higher pressures than .223 Remington, and should not be fired from a firearm unless it is specifically designed to support that cartridge.

There are tons of misconceptions amongst reloaders when it comes to the topic of .223 vs 5.56. You ARE able to load 5.56 brass to .223 Remington specifications, but NEVER the other way around. .223 Remington brass has slightly thinner interior walls that will not hold up to pressures produced from a 5.56 NATO load. Failure to follow this can result in serious injury to yourself or others, as well as your firearm.

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