I was just wondering about some stuff I headr for AR-15 barrels. I've heard the 1:7 wear out faster than a 1:9. I'm fairly new to the gun world so I try to clear things up when I hear them. And also which one will be able to shoot a 62 grain bullet sufficiently? Thanks in advance for anyone answering the questions. You guys and ladies help me out tremendously.
Alvin
Alvin