I just traded for a Remington 700 223 26" bull barrel with a Explorer Optics 4-16x50 illuminated. Anyone have any experience with this scope.?

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.

We have several on various AR's and one on a .243 Rem 700. All have been excellent with no issues on holding zero.
I can't tell much difference between the Explore Optics scopes and several Nikon scopes we use. Now my Zeiss is another story altogether.