Guys, I can't thank all of you enough. I am a greenhorn when it comes to scopes. I've had people say, why put a 3-9x40 on that.243 and under scope it. You need big magnification so it can live up to its potential. But rimfire, what you said here makes 100% sense. Is it called target acquisition? Here's a question to all of my mentors -- Having said that and shifting gears just a tad, knowing that this is a versatile round, what scope power would you all use? I can't afford two scopes. I don't want to put a 3-9 on her for deer and then a 4.5-14 for long range ground hogs. Please give me guidance.
Also, it might help to know I have 60 y/o eyes and I do use cheaters (2.75) for close up reading. My distance vision is declining but not real bad yet. I have many pairs of glasses. Do I leave my bi-focals on when using the scope?
What distance do you plan on shooting? A 3-9, 3.5-10, 4-12 can be perfectly usable on a 243 and fit the rifle fine.
There's a lot of variables when it comes to scopes. Adjustable objectives/parrallax, reticles, MOA turrets for MOA reticle and vice a versa if it's MRAD, don't over scope it either. If you're hunting, you're going to want to see your target, have a wide field of view, not be able to pick out a single hair strand in a 5" area somewhere on the animal.
Also, don't buy a scope online, and never buy a scope without looking through it first or have a good idea what it will look like; also ask to look at the scope outside.
I do this with customers a lot. From our shop to some apartments close to us, it's roughly 350 yards. Closer to the road looking south, it's 1000 yards. Different scopes look different though different eyes. I've sold a lot of Vortexs to people who, to them, were clearer, crisper, and had a wider field of view than the comparable Bushnell, Leupold, Nikon, etc. That being said, people have chosen other brands over others for those reasons. TO ME, Nikons don't look right. I feel like the FOV isn't as wide as it should be and the reticles reflect light (not a fan of their BDC system either). A VX1 Leupold would be a simple scope too and, again to me, look clear and crisp.
If you go the Vortex route, get the Crossfire II line. The Diamondbacks are nice and the eye relief is very good, but the FOV appears a lot smaller.
I'd look at the CF2 4-12x40 with the BDC reticle, spend $35-$45 in a study set of rings and call it a day. Get the non AO model unless you plan on shooting way out there and to keep things more simple in the field.
Don't forget too, all these scopes in this price range will be second focal plane, not a first. If you get a BDC style reticle, the subtensions will only be correct on the highest magnification (generally). If your first has mark is 2 MOA at 100 yards, at 12 power, and your scope is only set at 6 power, that has mark will now have a 4 MOA value