Judo,
100 yards? 70 yards? Wow, that's a long distance for a 6x magnification. And with eyes that are 10x as old as the magnification....
No kidding, mine are getting there as well: My life uses
variable age,
illuminated rebrainicle (sometimes isn't so bright), and my
maximum elevation adjustment seems to be shrinking somehow. At least
turrets and reticle match up, not this MIL/MOA unmatch. I think of myself as a
fast lens (large objective diameter for low light conditions), but even that slows down it seems.
So, all that said, I think a few more details of your shooting style and shooting scenarios will help us help you make a choice....
Why fixed instead of variable magnification? (You don't need to change the magnification all the time, but it sure comes in handy when you DO have a really close shot, or are indeed reaching out to 70 or 100y).
(1) When you hunt, are you shooting offhanded, or rested on a tree, or on a bench rest? The better rested, the higher magnification you can use without getting the scope image too jittery.
(2) How wide of a field of view (FoV) do you need at minimum magnification (depending on your
minimum hunting range)? For my 10y and 15 yard shots I like to have a FoV of around 30-35ft at 100y. A FoV as low as the mid 20's is marginal but doable, especially if quarry usually stays at 20/15y or more. Less than 15y FoV I do not buy for my style of hunting. The FoV if different for each scope, and bottom magnifications of 3x and 4x usually have enough FoV, but in the end you need to check the specs of each scope.
(3) How much of a magnification do you really need at the top end (depending on your maximum range and size of kill zone, AND the quality of your eyes)? I shoot mostly field rested (leaning against a tree or other structure), and I feel I'd like more magnification at 60 yards than the 12x I'm using on one of my rigs. For a 100y I have an 18x, and that does fine, though to see my impacts on a paper target it gets a little dicy. 24x would serve me better there.
(4) Do you dial your turrets, or use holdoffs, or do both?
(5) So, if you do decide for a variable magnification scope, would you prefer FFP or SFP?
(6) Is weight
very important to you? Or length?
(7) Do you need an illuminated reticle, or a grid style reticle?
(8) How important is the clarity of the scope image (the glass)? This is an expensive issue...
(9) And most important…: What's your budget?
Matthias