
I have a Remington 770 30-06 with a Bushnell Scope that came with it. It is as 'plain jane' as a a rifle scope comes. Straight cross hair reticle. Now, I'll be honest...bullet trajectory confuses me. I understand the 'basic' concepts of bullet drop (e.g., it drops the further out it goes).
I will be going out this weekend to sight it in for the first time (it's been laser bored, so I am hoping it is already pretty close). I'll be sighting it at 100 yards.
My first question would be in regards to closer shots. When I was in the service, we knew that we had to aim lower at the little green commies at 50 yards to accommodate the bullet's trajectory. At 100 yards, we could aim COM. Does this same premise still hold true for a 30-06 (or any rifle for that matter)?
I've been looking over this site: http://www.huntingmag.com/guns_loads/30_06_springfield/" onclick="window.open(this.href);return false;
So if I am looking through the cross hairs at, say, 75 yards, should I am slightly lower on the Buck (maybe an inch or two on the buck) to accommodate bullet lift? If I am taking a shot at 150 yards, am I aiming closer towards the spinal cord (in the kill zone) to accommodate bullet drop?
I really apologize if these are basic questions, but like I said, I don't want to embarrass myself. I could knock down a rabbit at 30 yards with my pistol, but put a large Buck in front of me, and I feel lost.

Thanks in advance for everyone's help!