01-31-2012, 10:31 PM
Drifter Wrote:Could you elaborate on the quoted lines above? -Thanks
Drifter:
Sure. Given a 10X M-3 or M-2 optic on a M-24 or M-110, an average trained Army Sniper, and issued M-118 SB or LR. Using a 300 meter elevation and hold overs, hit probabilities are reduced significantly when the shooter has to use any combination of two or more mils of either elevation or windage. In other words he is using more than about a two mil hold from 300 for elevation and particularly when he must use such a hold for both elevation and windage. Hold overs do OK to 500 from a 300 zero but past 500, other factors take over, making it better to try and estimate a good range and index elevation (I do not recommend indexing windage except for unique environmental conditions).
Other factors that tend to play a much more critical role past 500. Danger space reduces immensely, making range estimation more critical and making it more necessary to be accurate in a mil hold to the 1/10th of a mil. Inability to dope wind and convert to mils fast enough combined with trying to track a moving target, thick reticule pattern found in the M-3 / 2 scopes and most civilian optics that use a mil reticule, 10X starts losing its performance at 600 and beyond, difficulty in a person being able to maintain a hold when that hold is far from the cross hair as the cross hair tends to be the point where the eye will shift to in order to figure out if it is holding '2.7 mils' or elevation while trying to hold '1.8 mils' of right wind for example.
LR55