ORIGINAL: Tuffbroadhead
Thats where I always zero my rifles in, my 308's are zeroed for 325 yards......
Point blank range is explained pretty simple as if a rifle was to be perfectly flat and shot, the bullet trajectory inclines(rises) slightly out of the muzzel and the point blank range is where the projectile crosses the line of the muzzel.
Wrong! First of all bullets do NOT rise!
Secondly, "Max Point Blank Range" for a given caliber and load "is the maximum range, at which the bullet is either higher, or lower than the line-of-sight, aiming point"
For example, if you use a 3" MPBR, and the MPBR is 325 yards, it means that if you aim "dead on" (line of sight,) your bullet will never be more than 3" higher, or 3" lower than theline of sightaiming point out to 325 yards.
Theoreticly, eleminating the need for "hold over" out to the max range!
Personally, my shots are hardly ever that long, so I usually sight in 0-1" high @ 100 yds. I don't like to hit 3" high on short range shots!