Originally Posted by
UncleNorby
Sounds right to me.
Your exact trajectory will depend on your gun, and things such as the height of your scope in relation to the bore. A basic rule of thumb is to sight in dead on at 25 yds. This will place most trajectories on the paper at 100 yds. Verify your trajectory at 100, adjust as necessary, and then verify at longer ranges, and make further adjustments as needed to establish your maximum point blank range (MPBR).
MPBR is the distance to which you do not need to adjust your point of aim. With a 308 that may be 225-250 yds. Within that range you aim dead on and shoot. The bullet will hit anywhere from 2-3" high to 2-3" low of your point of aim. If you hold dead center, that's a dead deer every time.
+1
I have a Savage .308 with a Bushnell 3-9x40 scope and was out yesterday at the outdoor WMA range for the first time in a few months. My .308 is still dead on accurate.
1" high at 100 yards from a solid bench rest. 168 gr BTHP rounds. They all hit 1/2 - 1" of each other (well, I
was using a bench rest!
- ain't no way I could shoot that well by myself!)
I have heard the 25 yard = 100 yard rule of thumb too, but I have never used it or verified it.