Safety Isn’t Optional—It’s Essential At RTF3TX Gunsmithing, safety is more than a policy—it’s a culture. We see far too many shooters, from first-timers to seasoned competitors, underestimate the risks of using the wrong ammunition in their firearms. One simple mistake—like using .223 Remington in a 5.56 NATO barrel, or vice versa—can turn a day at the range into a disaster. Let’s break down why ammo selection is so important, how .223 and 5.56 differ, and why proper cleaning