I have a couple. I have the exact one your talking about and a 3x9 tactical. the 4-16 is on a Remington 700 .308 26" barrel. I have dropped it let it ride on the front of my golf cart/deer buggy and have shot 400-500 rounds and have not had any zeroing issues. The 3-9 is on my ar10 and has taken a lot of pigs. No issues.