Question - mils in lower power scopes?

I currently have a Hawke 3-9 Airmax and I believe that the reticle is true mil at 10x. I think all Hawkes are like this. Are the 2-7 Airmax and Vantage like this? So, at max 7x the mils are actually bigger than mils? How about SWFA? Is the fixed 6x the same size reticle as the 10X so that the mils in the 6x are actually bigger than mils? I'm scope shopping and trying to figure this out without much luck and I know one of you will have the answer.
 
It should be worth noting that the Hawkes I've owned, three sidewinders now, none of them are actually true mil at the power they claim. They are all off by some margin. The only way to get them to true mil is to set up a measure down range and adjust the power until the reticle is showing true mil relative to that. Then manually mark this on your power ring so you can find it again. (as shoot44 noted this is for SFP scopes only, FFP scopes are either correct from the factory or you're screwed) 



If/when you do this, my recommendation is to set up a marker which is several mils across. That way you're minimizing your potential error judging distance at the margins. I hope that made sense. 
 
I know nothing about hawke but I know for sure that swfa was designed to be military so no matter what swfa ss scope you get will be precisely exactly mil dot. I know this because I use mathematics to calculate my drop and they are always spot on. However you can also purchase moa reticles with those scopes. They will also be exact just american standard moa instead of mils. Swfa scopes are quite a bit better than hawke in my opinion. Good luck. 
 
Thanks for the replies. Nothing in the Hawke manual about this (good suggestion, shoot44) but the Hawke website says that the reticles are good at 10x even on the pages specific to the 2-7x scopes. Strelok specifies 10x for the Hawke mil dot but not the SWFA. Couldn't find a manual for the SWFA. I'm guessing that the SWFA's are sized for the specific fixed power like you say, Raden1942. And, the Hawkes are scaled for 10x even though they only go up to 7x. And, it's really not that big a deal. You can get your dope either way and you can always go to 5x for true double mil dot. Might even be a plus for the Hawke since the wire thickness would be a little thin at 7x and under. I have a couple 2-7xHawkes on powder burners - sweet scopes but they are the duplex reticles so I can't test it and my 3-9x is just to close to 10x for me to test that. So, I'll let you guys know if I get one what the deal is.
 
A 3-9 but mils true at 10x, what???

Unload in the classifieds....

SFP, mil and moa mixed, eh it's 2019, there's better solutions.

I'm not much into low mag scopes but I do have a Athlon Argos 4-16x40 SFP on my coyote hunting rifle, it can be had for $160-ish, it's true mildot at 10x and has capped finger adjustable mil turrets. 4x for brush hunting at closer distances and for the FOV, 10x for accurate holdovers and holdoffs, 16x for smaller vermin and dialing solution. I hate it when I forget to put it on 10x when I want to holdover, lol - SFP, smacks head. I'm used to FFP so the additional self reminder doesn't come all the time like I think it should.