New to the forum, and certainly new to red dots, 1-4X's etc.

I'm looking for my first optic to sit atop my first AR build in 300 BLK. I'm liking the idea of some magnification for working from 100-200 yards but at this time not at all interested in BDC type reticles. I'm also liking the idea of a red dot. I have a budget of about $400.00 at this time, limited but a budget is a budget.

In that range I like the Leatherwood Hi Lux CMR, the Mueller 1-4X24 Speed Shot and the Millet DMS-1, so far. There are other RDS's I like but they include no magnification.

My question: I'll use the Mueller for this, it has a 4 moa dot, I'm assuming that's at 1x. When the magnification goes to 4x at 100 yards the dot has to remain the same size correct? in other words at *4X / 100 yards* would the dot decrease to 1 moa staying the same size? Obviously the dot can't magnify 4x or it would cover 16" at 4x / 100 yards. Am I thinking about this correctly?

I warned you it was newb dangerous...