I have slowly gone over to FFP for target / hunting scopes over the years
For me, its for holdovers at any power .
Lots of guys will flame me for this, trying to mil for range when hunting seldom works as advertised
If you are reaching out that far , an range estimation error trying to mil a "guesstimated " size animal , not to mention the time it takes seldom is conducive for real world hunting
Not sure how far you plan to reach out, but if you look at ballistic table, you can clearly see the dope for example, between 500 and 525 yards is significant . Most guys will not be able to mil a animal for range that accurately and quickly
Real world example, I watched my whitetail last year for 2 hours . He popped out at least 5 different times at various locations between . Way easier to hit him with laser rangfinder and just hold over or dial come ups IMO
Had a Nightforce 5-22X 2ndFP with NR-R2 recticle. Problem is to use this recticle for holdovers , its calibration is at 22X which is way to high power most of the time for hunting
Went with FFP and never looked back
I do play around ranging with recticle when shooting gongs / targets unknown distance for practice , but IMO in most hunting situations I generally have more pressing things to figure out, so easier to use laser
When shooting unknown distance gongs / targets its nice to be able to spot buddy with mil recticle at any power and call his shots ( scope with MRAD adjustments makes life easy....no idea why anyone would want mil recticle with MOA adjustments ! )
Reticle Thickness
Again, different if you are shooting paper for wee groups, but having used FFP ( 4 different reticles of various thicknesses ) I never think that recticle is covering too much (especially hunting )
You need to take it out and play in the field ...looking through scope in shop won't give you best idea
Often and dusk / dawn I appreciate the heavier reticle .
Having said that, when its that dark , you are seldom at max power anyways so its a moot point