Understanding the Difference: .223 vs. 5.56 Brass
A Look at the Chamber’s Role Remington’s Specifications The .223 Remington chamber is typically designed with tighter dimensions. This means the chamber is built to a more precise set of measurements, leaving less “freebore,” which is the space between the case mouth and the rifling’s start. This precision, when matched with properly sized .223 ammunition, … Read more