So what do you see most often for magnification? Seems to me that something like 8-25 might be the hot ticket.
I, personally, like my 15x. I rarely have to dial back to avoid soda-straw syndrome, but I can still have a good sight picture on a MOA target at 800. I don't like having to run my mag to find my target, just another thing to monkey around with for no real gain. The only thing more magnification gives you is a more finite sight picture, it will not make you, the rifle, or anything else more accurate.
I find folks who run much over 20x tend to have to dial back quite a bit to find their targets, then dial in to make their reticle correct for firing their shot. Higher mag also equals more mirage. A fixed 10x will do most people just fine. Unless you are running a FFP scope, you only have one mag setting where your reticle is correct.
Does anyone actually use their retical to range? Seems like it would be a good practice to learn, cause you may not always have your range finder. From what you have seen, does the retical have an effect on ranging thru to scope?
A lot of people do, including yours truly, up until about 3 months ago when I broke down and purchased a Swaro Laserguide. As far as LRFs go, unless you are willing to spend close to or more than $1k, don't waste your money. Your $200-400 Cabela's hunting LRF simply will not suffice much past 400 or 500.
Even if you do have a nice LRF, learn to mil range. Equipment fails, have an alternate method. Do not rely on appearance of object, bracketing, or unit of measure, as I can make anyone screw these up pretty easily.
Yes, the reticle is used to measure your target in mils or MOA, and if you know the dimensions of your target, you can get suprisingly close to the actual range.
Mil reading is ~0.8
(Target size in inches) X (27.7 for yards) = Constant
(Target size in inches) X (25.4 for meters) = Constant
24 X 27.7 = 666.48
(Constant) / (Mil Reading) = Range in yards/meters
666.48 / 0.8 = 833.1 yards
One thing I always forget to mention: Scope mounts and levels. Get quality rings and rails. Level, Loctite, and torque everything, and set your level using a plum line. I use an el cheapo scope level that works fine for me.