OP, what is your reasoning for choosing this scope ? Price etc?
What distance do you think most of your engagements will be ?
FWIW, I have the non illuminated model, and while it is a great bargain, and I would have no issue using it for SD roles, I am in the US, and not subjecting it to the everyday abuse you would. It's a good optic, but I don't think it's combat worthy.
The reticle is designed for a 55gr bullet at roughly 3200fps, a 62gr NATO will be close as will a heavier, higher BC bullet like you mentioned at the ranges you mentioned, but will be an inch or two off. The 55gr may be an inch or two off in your rifle, in your conditions, elevation.
For your engagement distances you may be as well served with an optic with no magnification, such as an Eotech which has a 1moa center dot, and mounting a magnifier on a flip mount behind it for longer engagements. 400 meters isn't that far or that hard to hit 10" plate without magnification, but with a moving target and one that takes cover and fires back, the magnifier will give you the magnification and clarity to see him, or what he has exposed of himself better.
If a 1x4 power scope is what you want, there are better options.